Which set of flasks will change temperature most quickly?
Four sets of flasks
A. Set A (solid gold chunk between flasks)
B. Set B (solid stone chunk between flasks)
C. Set C (solid glass chunk between flasks)
D. Set D (solid rubber chunk between flasks)
Answers
Answer:
Set A will change temperature the most quickly because gold is a very good conductor of heat and electricity.
Explanation:
Set A (solid gold chunk between flasks) would likely change temperature most quickly. Therefore, option A is correct.
The rate at which the temperature changes in the flasks will depend on the thermal conductivity of the materials used as the chunks between them. Materials with higher thermal conductivity transfer heat more efficiently, leading to faster temperature changes.
Therefore, Set A (solid gold chunk between flasks) would likely change temperature most quickly, followed by Set B (solid stone chunk between flasks), Set C (solid glass chunk between flasks), and finally Set D (solid rubber chunk between flasks).
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Related Questions
1. The periodic table is a model we can use to predict interactions between * 5 points
elements. Which element would most likely form a combination with
calcium in a 1:1 ratio? (Hint: Compare the number of bonds the elements
can make.)
1.Carbon
2.Qxygen
3.Nitrogen
4.Fluorine
Answers
Fluorine is the element that would most likely form a combination with calcium in a 1:1 ratio.
How are predictions made using the periodic table as a model?One illustration of a model is the periodic table. By drawing attention to patterns in the characteristics of elements, it enables scientists to make predictions. Scientists were able to complete blanks and fix errors in the original periodic table thanks to the discovery of new elements.
What is predictable based on the periodic table?Electronegativity, ionisation energy, electron affinity, atomic radius, melting temperature, and metallic nature are important periodic patterns. Chemists can forecast an element's characteristics with great speed thanks to periodic trends, which are created by the periodic table's organisation.
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Question 9 2 pts What would you see when titrating if an indicator was not added? no color change would occur; it would not be clear when the equivalence point was reached a color change would still occur; it would not be clear when the equivalence point was reached a color change would still occur, the equivalence point would still be identifiable no color change would occur; the equivalence point would still be identifiable Question 6 4 pts In step 3 of Part A, suppose you add 50 mL of water instead of 75 mL to dissolve the KHP. Would this affect the overall outcome of your data? Why or why not? Hint: try to determine whether or not your calculations are affected by this change. outcome would not be affected; the only numerical data recorded in Part A is the volume of NaOH used outcome would not be affected; the calculation uses mass to determine moles of KHP in the solution outcome would be affected; the lower volume of water increases the volume of NaOH required to reach the end point outcome would be affected; the lower volume of water increased the number of moles of KHP in the flask
Answers
If an indicator is not added during a titration, it becomes difficult to determine the endpoint of the reaction.
The endpoint is the point at which reaction has been completed, and further addition of titrant does not result in any further reaction. Indicators are added to titrations to provide a visual indication of endpoint, as they change color in response to changes in pH. Without an indicator, the endpoint of reaction would be difficult to determine, as there would be no visual cue to indicate that the reaction has been completed. This could result in over-titration or under-titration, leading to inaccurate results. Therefore, it is essential to add an appropriate indicator to a titration to ensure accurate and reliable results.
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--The complete question is, What would you see when titrating if an indicator was not added? ---
In Humans, the liquid waste
filtered by the kidneys is stored
in the ......?
A) Stomach
B) Bladder
C) Lungs
D) I'm not sure. I need
more help with this
topic.
Answers
Is this a correct diagram for a Lewis dot structure of Fluorine?
No, because a Lewis dot structure should only include the valence electrons.
Yes, because it correctly shows 7 electrons on the outer ring.
Yes, because it correctly shows 9 electrons.
No, because it is showing an ion of fluorine, not an atom.
Answers
Yes, is a correct diagram for a Lewis dot structure of Fluorine because it correctly shows 9 electrons.
What is Lewis dot structure?
The valence shell electrons in a molecule are depicted in an extremely simplified manner by a Lewis Structure. It is used to demonstrate how the electrons in a molecule are positioned around particular atoms. Electrons are shown as "dots" or, in the case of a bond, as a line connecting the two atoms.The group 17 element fluorine has a total of nine electrons in the following configuration: 1s2 2s2 2p5. Fluorine's outermost shell has seven electrons. In the 2s and 2p electronic shells, respectively, there are two and five electrons. whose fluorine lewis dot structure depicts as dots.
In the Lewis structure, the letter Fluorine (F) is written inside a bracket, surrounded by seven dots that stand in for the valence electrons.
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When copper metal is added to silver nitrate
in solution, silver metal and copper(II) nitrate
are produced. What mass of silver is produced
from 52 g of Cu?
Answer in units of g.
Answers
Step 1: Write the chemical equation:
2Cu + AgNO₃ → Cu(NO₃)₂ + Ag
Step 2: Calculate the moles of Cu:
n(Cu) = mass/Ar
n(Cu) = 52 / 63.546
n(Cu)= 0.818 mol
Step 3: Find the mole ratio between Cu an Ag and figure out the moles of Ag
Cu : Ag
2 : 1
0.818 : 0.818 / 2
0.818 : 0.409
Thus, n(Ag) = 0.409 mol
Step 4: Find the mass of Ag:
Mass of Ag = moles × Ar.
Mass = 0.409 × 107.8682
Mass = 44.11g
A saturated solution of silver chromate (Ag2CrO4) has a silver ion concentration of 8.66 x 10^-5 M. What would the concentration of silver ions be in a saturated silver chromate solution if solid sodium chromate (Na2CrO4) is added to form an additional 0.0600 M chromate ion?
Answers
1.732 x 10⁻⁴ M is the concentration of silver ions be in a saturated silver chromate solution solubility product if solid sodium chromate.
The equilibrium reaction for the dissolution of silver chromate is:
Ag₂CrO₄(s) ⇌ 2 Ag+(aq) + CrO₄²⁻(aq)
The solubility product constant (Ksp) expression for this equilibrium is:
Ksp = [Ag+]² [CrO₄²⁻]
In a saturated solution of silver chromate, the concentration of silver ions is given as 8.66 x 10⁻⁵ M.
When solid sodium chromate is added, it dissociates into sodium ions and chromate ions:
Na₂CrO₄(s) → 2 Na+(aq) + CrO₄²⁻(aq)
The concentration of chromate ions in the solution is given as 0.0600 M.
Since the stoichiometry of the equilibrium reaction is 2:1 for silver ions to chromate ions, the concentration of silver ions will double solubility product. Therefore, the new concentration of silver ions in the saturated solution will be:
[Ag+] = 2 x (8.66 x 10⁻⁵ M) = 1.732 x 10⁻⁴ M
After adding solid sodium chromate, the concentration of silver ions in the saturated silver chromate solution will be 1.732 x 10⁻⁴ M.
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If you pull on an object hanging from a force meter would this give you an accurate reading of its weight?
Answers
If we pull on an object hanging from a force meter it wouldn't give us an accurate reading of its weight.
Another way to describe force is as a push or a pull. Instruments called force meters are made to measure force precisely. The digital meter and the spring meter are the two primary types of force meters. Typically analog, spring meters have a hook on the end of the spring that you attach to the thing you want to measure. The force used to expand the spring mechanism is measured by spring force meters. Either a strain gauge or a load cell is used in digital meters. The load cell or strain gauge electrical signal is converted into a force value by the software and electronics of the force gauge, which is then shown on the instrument's digital screen.
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If you pull on an object hanging from a force meter, the reading you obtain would give you an accurate measurement of the force you are applying to the object, but not necessarily its weight.
Weight is the force exerted on an object due to gravity, and it is equal to the mass of the object multiplied by the acceleration due to gravity (typically 9.8 m/s² on Earth).
When you pull on the object, the force meter measures the tension force in the string or whatever is connecting the object to the force meter. This tension force includes the force you are applying as well as the weight of the object. Therefore, the reading on the force meter would be the sum of the force you exert and the weight of the object.
To accurately determine the weight of the object, you would need to ensure that the force meter is only measuring the tension force due to the weight of the object and not any additional forces you are applying. This can be achieved by making sure that the object is stationary and not accelerating.
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How do coastal sand dunes form in Florida?
Answers
Answer:
They are formed by windblown sand collecting around an obstruction. As organic matter is deposited by wind and waves, low herbs colonize the dune. As these plants collect more sand and organic matter, the dune increases in height becoming the fore dune.
3. What are the values of the graduations (unmarked lines) in each of the
following graduated cylinders?
Q
(A)
50
3
graduations =
(B)
50
-40
-30
-20
10
graduations =
(C)
25
-20
-15
10
5
graduations =
Answers
The values of the Graduations for A , B and C will be 0.2 ml, 2ml and 1ml respectively.
Graduated Cylinder - A popular piece of scientific equipment used to measure the volume of a liquid is a graduated cylinder, sometimes referred to as a measuring cylinder or mixing cylinder. Its form is slender and cylindrical. Each marked line on the graduated cylinder indicates the volume of liquid that has been measured.
The clear graduated cylinder is widely used for volume measurements and is regarded to be more accurate than a beaker since it contains permanently marked incremental graduations.
To calculate the value of graduations-
1. Subtract the two values to get the value between the labeled graduations.
2. Determine how many spaces there are between the two graduations. Keep in mind that volume equals space.
3. Divide the number of gaps by the value between the graduations.
For cylinder A.
2 ml- 1ml = 1ml
Number of spaces = 5
∴1/ 5 = 0.2
Graduation = 0.2ml
For cylinder B -
20-10 = 10
number of spaces = 5
∴10/ 5 =2
Graduation = 2ml
For cylinder C-
10-5 = 5
Number of spaces= 5
∴5/5 = 1
Graduation = 1ml
Hence , Graduations for A , B and C will be 0.2 ml, 2ml and 1ml respectively.
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Your question is incomplete. Please find the missing image below.
Which of the following correctly identifies how a power plant changes the atmosphere?
A. A plant powered by coal releases oxygen.
B. A plant powered by geothermal energy releases nitrogen oxides.
C. A plant powered by nuclear energy releases sulfur dioxide.
D. A plant powered by natural gas releases carbon dioxide.
Answers
Answer:
D
Explanation:
A plant powered by natural gas releases carbon dioxide
In an ecosystem, a plant powered by natural gas releases carbon dioxide which is toxic for the environment.
What is an ecosystem?
Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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P O R F A V O R
4. Expresa las siguientes magnitudes en unidades del Sistema
Internacional. (1 punto)
a. 45 m3
b. 1250 cm3
c. 63 días
d. 97 cm/min2
e. 927 g∙cm/min2
f. 97 km/h2
g. 2500 g/cm2
h. 36 km/h
Answers
Answer:
a. 45×10³ kg
b. 1.25 kg
c. 5443200 s
d. 2.69×10⁻⁴ m/s²
e. 2.57×10⁻⁶N
f. 7.48×10⁻³ m /s²
g. 2.45 Pa
h. 10 m/s
Explanation:
The SI units are: kg, m, s, N, K, A, Pa, J and cd
a. 1 g is the mass for 1 cm³. We convert the m³ to cm³
45 m³. 1×10⁶ cm³ / 1 m³ = 45×10⁶ cm³
By the way, 45×10⁶ cm³ = 45×10⁶ g
We convert the g to kg → 45×10⁶ g . 1 kg / 1000 g = 45×10³ kg
b. As 1 g = 1 cm³, we convert the cm³ to g and then, the g to kg
1250 cm³ = 1250 g → 1250 g . 1kg / 1000 g = 1.25 kg
c. 1 day has 24 hours; 1 hour has 60 minutes; 1 minute has 60 seconds
1 hour has 3600 s. Then 24 h . 3600 s / 1 h = 86400 s
86400 s/d. 63 d = 5443200 s
d. 1 min² = 3600 s²
97 cm / 3600 s² = 0.0269 cm/s² / 100 = 2.69×10⁻⁴ m/s²
e. 927 g.cm / min² / 3600 s² = 0.2575 g.cm/s² → dyn
We need to convert dyn to N
1 dyn = 10⁻⁵N → 0.2575 dyn . 10⁻⁵N / 1dyn = 2.57×10⁻⁶N
f. 1 m/s² = 12960 km/h²
12960 km/h² . 1 m/s² / 97 km/h² = 7.48×10⁻³ m /s²
g. 2500 g/cm² . 1kg / 1000 g = 2.5 kg/cm²
1 Pa = 1.02kg/cm²
2.5 kg/cm² . 1 Pa / 1.02 kg/cm² = 2.45 Pa
h. 1 h = 3600 s
36 km / 3600 s = 0.01 km /s → 0.01 km . 1000 m / 1 km = 10
= 10 m/s
5. Predict You are floating motionless on a
rubber raft in the middle of a pool. A friend
forms a wave by slapping the water every
second. Will the wave carry you to the edge
of the pool? Explain your answer.
Answers
When the pool's center is occupied by the rubber raft. Think of it as the raft's starting position.
Once it reaches the rubber raft, the raft will start to rise when the friend creates a wave by slapping the water.
The raft will really gain energy from the wave, moving upward.
The raft will return to its original place once the wave passes.
The raft will return to its original place where it was before the wave hits it because it is indicated in the question that it is immobile.
As a result, the wave won't take it to the pool's edge.
Because you are only lightly lifted by the waves or because Lee cannot be pushed to the other side of the pool, the wave won't drive the person on the raft over the edge of the pool.
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According to your investigation in part A, how do strong acids differ from weak acids? Select all the correct answers. Strong acids contain more A− than weak acids do. Strong acids contain more H3O+ than weak acids do. Strong acids contain more HA than weak acids do. Strong acids contain more OH− than weak acids do.
Answers
Answer:
Strong acids contain more A− than weak acids do.
Strong acids contain more H3O+ than weak acids do
Explanation:
When we talk about a strong acid, we are referring to any acid that is completely dissociated or ionized when it is in an aqueous solution.
It is very eager to lose a proton, H+ in solution according Arrhenius definition.
In aqueous solution, a strong acid ionizes as follows:
HA(aq) + H2O → H3O+(aq) + A−(aq)
Since, strong acids ionize completely in solution, strong acids contain a greater H3O+ and A− concentration than solutions of weak acids.
Answer:
A. Strong acids contain more A− than weak acids do.
B. Strong acids contain more H3O+ than weak acids do.
D. Strong acids contain more OH− than weak acids do.
Explanation:
Plato correct
15. What are the five things that influence weather?
(8 Points)
wind, air pressure, temperature, clouds, humidity
climate, regions, zonés, continents, plateaus
rain, snow, sleet, drizzle, floods
Answers
air pressure
temperature
humidity
clouds
which two elements make up the main structure of an organic compound?
A. Carbon and oxygen
B. Nitrogen and oxygen
C. Carbon and hydrogen
D. hydrogen and sulfur
Answers
Answer:
b nitrogen&oxygen
Explanation:
i'm built different
When a car driver puts their foot on the brake pedal, the brake fluid is pushed down a narrow tube connected to the brake. Since brake fluid is hard to squash, the brakes are put on immediately. What is the scientific term for squash?
Answers
When a car driver puts their foot on the brake pedal, the brake fluid is pushed down a narrow tube connected to the brake. Since brake fluid is hard to squash, the brakes are put on immediately the scientific term for squash is compressibility.
What is compressibility?The scientific term for squash is "compressibility". In the case of brake fluid, it has very low compressibility, which means that it cannot be easily compressed or squashed, resulting in immediate and effective brake application when pressure is applied to the brake pedal.
The term "compressibility" describes how much a particular volume of matter shrinks under pressure. A solid or a liquid under pressure essentially maintains its volume. The solid or liquid's constituent atoms, ions, or molecules are in close proximity to one another.
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a
A flying plane with a total surface area of 200 m2., air acts on the plane body with a force
of 8000000N. Find the air
pressure.
Answers
The pressure of the air is 40000N/m².
To calculate the pressure of the plane, we use the formula below.
Formula:
P = F/A................. Equation 1Where:
P = Pressure of the airF = Force on the planeA = Total surface area of the plane.From the question,
Given:
F = 8000000 NA = 200 m²Substitute these values into equation 1
P = 8000000/200P = 40000 N/m².Hence, The pressure of the air is 40000N/m².
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One hour of bicycle riding can require 500-900 kcal of energy, depending on the speed, the terrain, and the weight of the racer. An individual wants to lose weight by riding at a modest effort, consuming 505 kcal of energy per hour. How many hours must he ride to lose 21.0 pounds of body fat? One gram of body fat is equivalent to 7.70 kcal of energy. There are 454 g in 1 lb.
Answers
Answer:
145 hours
Explanation:
Since one hour of riding a bicycle takes up 505 kcal of energy. It is also stated that one gram of body fat is equal to 7.70 kcal. Also, it is given that 1 pound of body fat is equal to 454 g.
Hence;
1 Ib= 454 g
21 Ib= 21 × 454/1 = 9534 g
But
1g of body fat = 7.70kcal
9534 g of body fat = 9534 × 7.70 kcal/1 = 73411.8 kcal
If 505 kcal is lost in 1 hour
73411.8 kcal is lost in 73411.8 kcal × 1hour/505k cal = 145 hours
Predicting Reaction Products
Balance the equations and predict the products for the following reactions:
Please help, my teacher never taught us this and it’s due today!
Will mark brainiest and give a lot of points!
Answers
The result of a chemical reaction or a process stage is a product (reaction product). a component of the reaction or mechanism stage that is not a substrate, reactant, reagent, beginning substance, or starting combination.
What is meant by reaction product?The organisms that result from chemical interactions are called products. Reactants undergo a high energy transition stage during a chemical process before becoming products. The reactants are consumed as a result of this process. It can occur spontaneously or be facilitated by catalysts, which reduce the energy of the transition state, and solvents, which provide the favorable molecular conditions for the reaction to occur.
Even in the case of reversible reactions, it is customary to draw products on the right side of chemical equations. Several characteristics of a chemical reaction, such as whether the reaction is exergonic or endergonic, are determined by the properties of products, such as their energies.
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What is the value proposition for consumers that Takealot
excels at? How is this different from traditional (non-online)
retailers.Don’t Confuse Platforms with Ecosystems (INSEAD
Blog), December 202
Answers
Takealot excels at providing convenience, extensive product selection, competitive pricing, and a seamless online shopping experience as its value proposition for consumers.
Convenience is a key aspect of Takealot's value proposition. As an online retailer, Takealot offers the convenience of 24/7 shopping from the comfort of one's own home.
Customers can browse a wide range of products, place orders, and have them delivered directly to their doorstep.
Takealot also offers an extensive product selection, spanning various categories such as electronics, fashion, home goods, and more.
This breadth of choices allows consumers to find and compare different products all in one place, saving them time and effort compared to traditional retailers with limited inventory.
Competitive pricing is another area where Takealot excels. By operating online, the company has lower overhead costs compared to brick-and-mortar retailers, enabling them to offer competitive prices and discounts to their customers.
The seamless online shopping experience provided by Takealot includes user-friendly interfaces, secure payment options, and efficient delivery services. This enhances customer satisfaction and convenience.
In contrast, traditional non-online retailers typically have limited operating hours, smaller product selections, and may not offer the same level of convenience and competitive pricing.
They often require customers to physically visit their stores, which can be time-consuming and may not provide the same level of ease and accessibility as online platforms like Takealot.
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Question 6 of 10
What does it mean when a reaction is spontaneous?
O
A. The reaction requires added energy.
B. The reaction goes to completion.
C. The reaction occurs rapidly.
O O
D. The reaction happens by itself.
SUBMIT
Answers
Answer:
D
Explanation:
Does not require energy ...may be slow or fast....
What is true of Qin's son?
O He had a long, peaceful reign.
O He invaded Tibet.
O The country rose up against him.
He built the Great Wall.
Answers
The true statement about the of Qin's son who ruled after him is that, the country rose up against him.
The third option is correct.
More about the Qin?
The first dynasty of Imperial China is referred to as the Qin dynasty.
The Qin dynasty, so named after its homeland in Qin state, emerged as a fief of the Western Zhou and existed for more than five centuries until 221 BC, when it was briefly elevated to an empire but only for a short time, lasting until 206 BC.
The first emperor of China, Qin Shi Huang, who had several sons of which his immediate successor Qin Er Shi had a short and tumultuous reign, as his rule was marked by political turmoil and rebellion.
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CUAL ES EL USO DE:
Erlenmeyer
Gradilla
Tubo de ensayo
Balanza
Termómetro
Probeta
Pipeta
Picnometro
Answers
Según la información los elementos son objetos de laboratorio que se utilizan para diferentes tipos de experimentos.
¿Cuál es el uso de estos artículos?El uso de los elementos es el siguiente:
Erlenmeyer: Matraz cónico utilizado para mezclar y reacciones químicas. Rejilla: Soporte utilizado para sostener tubos de ensayo u otros recipientes durante los experimentos. Tubo de ensayo: Recipiente cilíndrico utilizado para contener y calentar pequeñas cantidades de sustancias. Balanza: Instrumento utilizado para medir la masa de un objeto o sustancia. Termómetro: Instrumento utilizado para medir la temperatura de una sustancia o ambiente. Cilindro de medición: Recipiente cilíndrico de vidrio utilizado para medir aproximadamente volúmenes de líquidos. Pipeta: Instrumento de vidrio utilizado para medir y transferir volúmenes precisos de líquidos. Picnómetro: A Recipiente de vidrio utilizado para medir con precisión la densidad de líquidos o sólidos.English version:
According to the information the elements are laboratory objects that are used for different types of experiments.
What is the use of these items?The use of the elements is as follows:
Erlenmeyer: Conical flask used for mixing and chemical reactions.Rack: Support used to hold test tubes or other containers during experiments.Test tube: Cylindrical container used to contain and heat small amounts of substances.Balance: Instrument used to measure the mass of an object or substance.Thermometer: Instrument used to measure the temperature of a substance or environment.Measuring cylinder: Cylindrical glass container used to approximately measure volumes of liquids.Pipette: A glass instrument used to measure and transfer precise volumes of liquids.Pycnometer: A glass container used to accurately measure the density of liquids or solids.Note: This is the question:
What is the use of these words:
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Identify the type of energy this object possesses. A girl roller-skating Kinetic energy Potential energy
Answers
A girl roller-skating has kinetic energy.
Kinetic energy is the energy of motion. It is the energy possessed by an object due to its movement. In this case, the girl roller-skating has kinetic energy because she is moving.
Potential energy is the energy an object possesses due to its position or configuration. It is the energy an object has stored within it, ready to be released. An object at rest has potential energy because it has the potential to be set in motion and does work.
So, in this case, the girl roller-skating has kinetic energy because she is moving, and not potential energy because she is not at rest.
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what percentage of water on earth is fresh water
Answers
Answer:
only 2.5% is fresh water on earth
Answer:
The answer is 3%
Explanation:
The chemical equation below represents one of the most important reactions for life on Earth. It describes how plants (and some microorganisms) combine water, sunlight, and carbon dioxide to produce the main source of food for most living organisms, glucose. A byproduct of this reaction is the oxygen we breathe. Is this reaction balanced? You must explain your reasoning for full credit!
PLS HELP, 30 Points!
I also need to know what I need to add to the equation to balance it!
Answers
The reaction is not balanced because the number of atoms of the elements on the reactant side isn't the same or equal to that on the product side.
What is Photosynthesis?This is referred to as the process in which green plants manufacture their food in the presence of sunlight and other compounds and is why they are regarded as primary producers in the ecosystem.
The balanced equation for photosynthesis is:
6CO₂ + 6H₂O + light --> C₆H₁₂O₆ + 6O₂
In this, we can see that the number of atoms of the elements of Carbon, hydrogen and oxygen are 6, 12 and 18 which is the same on the reactant and product side which is why the equation given in the question isn't balanced.
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1. What's the difference between a hypothesis and a theory? a. "Theory" is another word for "fact;" "hypothesis" is another word for "guess." b. Hypotheses can't be proven; theories can. c. Theories have been confirmed through tests; hypotheses haven't. d. Theories contain many hypotheses; a hypothesis only contains one theory. 2. Place the following steps in sequence: A) Recognizing a problem; B) Testing a hypothesis; C) Drawing inferences a. A, C, B b. A, B, C c. B, C, A d. C, B, A 3. In the phrase, "The scientific method is an analytic process for determining why things happen," what's the best synonym for "analytic?" a. Probable b. Amazing c. Incoherent d. Logical 4. What must you do before you make a hypothesis? a. Run an experiment b. Make observations c. Form a theory d. Draw conclusions 5. If you were running an experiment to determine the temperature at which beans sprout the fastest, what would be the variable? a. The number of beans you plant. b. The height of the sprouts you grow. c. The amount of water you give the beans. d. The temperature at which each bean is kept 6. You should run an experiment several times to make sure your results are consistent. In the preceding phrase, what does "consistent" mean? a. Obvious b. Perfect c. Unchanging d. Testable 7. What might cause a theory to change over time? a. New laws passed by the government b. New but untestable ideas c. Changes in public opinion d. The discovery of new evidence 8. Evolution is one example of a theory. From what you know about the scientific method, what can you conclude about this biological theory? a. It's been tested many times. b. Scientists don't need to test it anymore. c. No one is allowed to test whether it's true or not. d. There is very little evidence to support it. 9. Which of the following is a testable hypothesis? a. Roses are more beautiful than violets. b. A plant needs at least five hours of sunlight per day to grow. c. Ice cream is delicious. d. Humans will someday land on Mars. 10. What happens if you test a hypothesis multiple times and the data doesn't support your prediction? a. Change the data to support your prediction b. Run the experiment again until you get the results you're looking for c. Conclude that your hypothesis cannot be proven d. Re-think your hypothesis 11. A controlled experiment is simply an experiment in which all factors are held constant except for one two three four 12. We make observations using our notebook calculator senses computer
Answers
Answer:
b. Hypotheses can't be proven; theories can.
Explanation:
Which of these mixtures is a suspension?
A. salad dressing
B. Gelatin
C. whipped cream
D. apple juice
Answers
Answer:
D. apple juice
Explanation:
of the following, which gives the correct order for atomic radius for mg, na, p, si and ar?
Answers
The proper order is Na > Mg > Si > P > Ar. As a result of the valence electrons' low nucleostatic attraction, sodium (Na) has the biggest atomic radius.
The electrons' orbitals get bigger and bigger as we go from top to bottom, increasing the atomic size.S and Ar are hence real. S is the largest element on the periodic table since it is on the left. Na has the most atoms of any of the other elements mentioned. Due to its position to the right of silicon, phosphorus will have a lower atomic radius for an uncharged atom than silicon. Due to its position to the right of silicon, phosphorus will have a lower atomic radius for an uncharged atom than silicon. The atomic radius grows in a group from top to bottom and decreases across a period, as seen in the figures below. The smallest element is therefore helium, whereas the largest is francium.
Learn more about atomic radius here:
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Which of the following is an example of a chemical property of matter?
O ability to melt
O ability to freeze
Oability to react
Oability to break
ITS SCIENCE
Answers
Answer:
C: Ability to react. Sorry if its wrong!
Explanation: