Answers
Answer:
1. Convection: c. Transfer of energy by movement of matter.
2. Radiation: e. Transfer of energy by waves, often through empty space.
3. Thermal Energy: a. The total energy an object has. The more stuff you have the higher this will be.
4. Conduction: d. Transfer of energy by contact between two things.
5. Heat: b. Any transfer of thermal energy
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Explanation(s):Explanation of #1:
Convection is one of the three ways thermal energy is transferred. Convection is usually defined as the transfer of heat by the circulation or movement of the heated parts of a liquid or gas. An example of convection on earth is convection currents. Convection currents are the movement of fluid as a result of differential heating or convection. In the case of the Earth, convection currents refer to the motion of molten rock in the mantle as radioactive decay heats up magma, causing it to rise and riving the global-scale flow of magma.
Explanation for #2:
Electromagnetic waves are waves produced the acceleration of an electric charge and propagated by the periodic variation of intensities of, usually, perpendicular electric and magnetic fields. This transfer of energy by waves is known as radiation. Or in other words, this kind of transfer is done through the propagation of electromagnetic waves, that carry energy, without need of a material medium, in empty space. Radiation is usually defined as the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and absorbed by another body.
Explanation for #3:
Thermal energy can be defined in 3 different ways. First, it can be defined as the internal energy of a system in thermodynamic equilibrium due to its temperature. Second, A form of energy; sensible energy; heat. Third and last, the energy released by an explosion. Thermal energy is produced through the movement of particles within a system or object, it can be referred to as kinetic energy. Kinetic energy is usually defined as the energy of a body or a system with respect to the motion of the body or of the particles in the system.
Explanation of #4:
Conduction is usually defined as the transfer of heat between two parts of a stationary system, caused by a temperature difference between the parts. Conduction is the transfer of heat through direct touch of molecules. Conduction is the transfer of thermal energy with no transfer of manner. It occurs when two materials touch. The heat movement in conduction is within and via the body itself. In contrast, heat transmission through thermal radiation frequently occurs between entities that are geographically separated. Heat can also be transferred by a mix of conduction and thermal radiation.
Explanation of #5:
As a noun, heat is usually defined as the state of a body perceived as having or generating a relatively high degree of warmth. There are 3 types of ways heat can be transferred which is via conduction, convection, or radiation. Heat produces thermal energy which is transmission through these 3 different processes. Thermal energy is the internal energy of a system in thermodynamic equilibrium due to it's temperature. Thermal energy is produced through heat and is transmission through the 3 processes in different ways (mentioned above obviously).
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additional comment:Definitions:
Radiation is simply the energy that is emitted by a body that has energy. Even human beings radiate energy (infra red radiation).
Convection is the transfer of heat through fluid (liquid or gas). It probably relates to astronomy in that due to gravity, a star's core is much hotter than the rest of it. The heated plasma rises to the surface like boiling water, where the heat is absorbed by the surrounding plasma through convection , then it cools and sinks down to the core again.
In the atmosphere conduction is the transfer of heat by direct contact. The best example would be the heating of the atmosphere that is directly in contact with the Earth (first few feet).
On a particle level this is energy transferred by the particles colliding with and passing energy into adjacent particles.
Related Questions
please help asap!!!!!!!!!!! How many molecules are present in 0.5 moles of NaOH?
Answers
Explanation:
oh shi sorry I wish I could help but I'm stupid
Some calcifiers can use bicarbonate (HCO3-) to make their shells.
How will they be affected by the decrease in pH?
Answers
Answer:
The removal of this ion from water by the calcifiers will definitely decrease the pH of water.
What is the bicarbonate ion?
The bicarbonate ion is the ion that is designated as HCO3-. We must notice that this ion is present in abundant amounts in the sea. This amount definitely make the sea slightly alkaline.
Now we must note that the removal of this ion from water by the calcifiers that require it to make their shell will definitely decrease the pH of water.
Explanation:
The removal of this ion from water by the calcifiers will definitely decrease the pH of water.
What is the bicarbonate ion?The bicarbonate ion is the ion that is designated as \(HCO^{3-}.\) We must notice that this ion is present in abundant amounts in the sea. This amount definitely makes the sea slightly alkaline.
Now we must note that the removal of this ion from water by the calcifiers that require it to make their shell will definitely decrease the pH of water.
Hence, the removal of this ion from water by the calcifiers will definitely decrease the pH of water.
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what's is area of square that has a side of 3.4cm
Answers
Answer:
11.56
Explanation:
11.56cm^2
Explanation:
3.4 x 3.4 = 11.56
A buffer solution is prepared by adding NH4CIto a solution of NH3 (ammonia).NH3(aq) + H2O(0) = NH4+ (aq) + OH-(aq)What happens if HCl is added?
Answers
ANSWER
The addition of HCl will shift to reactants
EXPLANATION
When some strong acid is added to a buffer, the equilibrium is shifted to the left, and the hydrogen ion concentration increases by less than expected for the amount of strong acid added. Buffer solution helps in adjusting the pH of a substance.
Since the HCl is a strong acid, it will shift to the left (reactant sides)
A compound is composed of 22.5% phosphorus and 77.5% chlorine. the molecular mass of the compound is 137.32 g/mol. what is the molecular formula of the compound? pcl2 pcl3 p2cl3 pcl4
Answers
The molecular formula of the compound is PCl₃ if the molecular mass of the compound is 137.32 g/mol.
An empirical formula can be described as a formula that tells about the relative ratios of different atoms in a compound.
The empirical formula for this compound containing phosphorus and chlorine can be calculated as follows;
As the compound is composed of 22.5% phosphorous and 77.5% chlorine, therefore;
Phosphorus = (22.5/100) × 137.32 = 0.225 × 137.32 = 30.897
Chlorine = (77.5/100) × 137.32 = 0.775 × 137.32 = 106.423
Now we can find the moles of each atom by using their molar mass as follows;
Phosphorus = 30.897 ÷ 30.97 = 0.998 moles
Chlorine = 106.423 ÷ 35.453 = 3.002 moles
Now dividing each mole value by the smallest determined number of moles (0.998) as follows;
Phosphorus = 0.998 / 0.998 = 1 mole
Chlorine = 3.002 / 0.998 = 3.008 ≈ 3 moles
Therefore the molecular formula of the compound will be PCl₃.
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Answer:
b
Explanation:
A yellow solution of iodine in water is shaken with an equal volume of tetrachloromethane describe and explain what happens
Answers
Answer:
See the answer below
Explanation:
When a solution of iodine is mixed with a solution of tetrachloromethane, the mixture turns purple due to the formation of \(I_2(CCl_4)\).
Iodine solution dissolves in carbon tetrachloride solution (another name for tetrachloromethane) due to the fact that both solutions are similarly non polar in nature. The equation of the reaction is as shown below:
\(I_2 + CCl_4 --> I_2(CCl_4)\)
Which of the following will require the least time for a reaction to reach equilibrium? O a. Cannot tell, since the time required to reach equilibrium does not depend on Kc. O b. Cannot tell without knowing the value of Kc- O c. Kc is a very large number. O d. Kc is a very small number. O e. Kc is approximately one.
Answers
The time required for a reaction to reach equilibrium can depend on the value of Kc, which represents the equilibrium constant. The equilibrium constant, Kc, is determined by the concentrations of the reactants and products at equilibrium.
In general, reactions with a larger Kc value tend to reach equilibrium more quickly than those with a smaller Kc value. This is because a larger Kc indicates that the concentration of products is higher compared to the concentration of reactants at equilibrium. As a result, the reaction proceeds more rapidly to reach the point where the ratio of products to reactants matches the value of Kc.
Therefore, among the given options, the answer would be option (c) where Kc is a very large number. In this case, the reaction would require the least amount of time to reach equilibrium.
It's important to note that the actual time required for a reaction to reach equilibrium depends on various factors such as temperature, pressure, and the presence of catalysts. Additionally, the time required for a reaction to reach equilibrium cannot be determined solely based on the value of Kc. However, in general, a larger Kc value suggests a quicker attainment of equilibrium.
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write any two conditions due to which demagnetization occur
Answers
Answer:
1) because of heating
2) because of hammering
If an object does Not explode, catch fire, or dissolve, how would you describe this object? (Three answers)
Answers
Non-combustible
eg:-glass,water,stone, Portland cement etc ...
Answer:
Noncombustible
Explanation:
Not explode means no blastsCan't catch fire hence no combustionnot dissolve means not reacts with H and OSo
Some examples are ,glass ,stone
a diatomic element has six bonding electrons, six non-bonding electrons, and 2 anti-bonding electrons. what is the bond order?
Answers
a diatomic element has six bonding electrons, six non-bonding electrons, and 2 anti-bonding electrons. the bond order is the pairing of two atoms with those atoms.
This is an atomic-level phenomenon in which elements share electrons to fill their valence shells.
You can also combine two or more substances into a compound.
According to molecular orbital theory, the bond order is half the difference between the bonding and antibonding electrons.
Mathematically, bond order = 0.5 (number of bond electrons – number of antibond electrons)
element bond electrons = 6
element antibonding electrons = 2
difference = bond electron - antibond electron
= 6 - 2
= 4
bond order = (0.5)*(difference)
bond order = (0.5)*(4)
bond order = 2
The bonding order of diatomic elements is 2, with 6 bonding electrons, 6 non-bonding electrons, and 2 anti-bonding electrons.
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A gas mixture in a 2.50 L cylinder contains 4.00 g of N: and 2.00 g of Oz at a temperature of 22 C.
Determine (a) the total pressure of the two gases and (b) the partial pressure of each of the two gases.
YOU WILL RECEIVE BRAINLIEST IF YOU ANSWER CORRECLTY!!
Answers
a)Total pressure = 1.81 atm
b) partial pressure of N2 = 1.25 atm and partial pressure of O2 = 0.55 atm.
What is partial pressure?Partial pressure is the pressure exerted by individual gas in a mixture is known as its . In a mixture of gases, each gas has a partial pressure which is the notional pressure of that constituent gas .
Given Weight of N2 = 4 g
Weight of O2 = 2 g
We know atomic mass of N2= 28 and
atomic mass of O2 = 32
R(gas constant) = 0.0821
T= 273K
nN2= 4/28= 0.14
nO2= 2/32= 0.0625
total n = 0.14+ 0.0625
n = 0.2025
P total= n*RT/V
= (0.2025* 0.0821* 273K)/2.5L
Total pressure = 1.81 atm
xN2= 0.14/(0.14+0.0625)
= 0.691
xO2= 0.0625/( 0.14+0.0625)
= 0.308
partial pressure of N2 = xN2 * P total
= 0.691* 1.81
partial pressure of N2 = 1.25 atm
partial pressure of O2= xO2 * P total
= 0.308 * 1.81
partial pressure of O2 = 0.55 atm
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Suggest a name for a compound containing potassium, carbon and oxygen.
Answers
The name "potassium carbonate" reflects the composition of the compound, with "potassium" indicating the presence of the potassium ion, and "carbonate" indicating the presence of the carbonate ion, which is composed of one carbon atom and three oxygen atoms.
Potassium has a valency of +1, meaning it tends to lose one electron to form a positive ion. Carbon has a valency of 4, meaning it can form four covalent bonds with other elements. Oxygen has a valency of -2, meaning it tends to gain two electrons to form a negative ion. Potassium carbonate is a white, odorless powder that is used in a variety of industrial applications, such as in the production of glass, soap, and fertilizers. It is also used as a buffering agent in some pharmaceutical preparations.
it is possible to form different combinations of potassium, carbon, and oxygen, depending on the number of atoms of each element in the compound. However, a common compound that contains these elements is potassium carbonate, which has the chemical formula K2CO3.
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Is water the only liquid? If not, name 5 more
Answers
Answer:
Is water the only liquid? If not, name 5 more
Water, ethanol, household bleach, blood, paint, milk, gasoline, mineral oil, acetone and butyl alcohol are examples of liquids. Liquids' properties allow them to flow or be poured easily into containers, lava
water is not the only liquid.
Answer:
apple juice, milk, smoothie, blood, urine
When a ball is rolling down a hill, what forces are acting on the ball? Why does it speed up?
Include friction and gravity in your answer.
Answers
Answer:gravity
Explanation:
Answer:
the gravity speed up because the friction didn't speed up
Which terms correctly identify the indicated structures in this sketch of a cell viewed under a microscope? Match each label to the correct cell part. Question 5 options: Golgi Apparatus Nucleus Endoplasmic Reticulum Mitochodrion Ribosome Lysosome
1.
2.
3.
4.
5.
6.
Answers
Answer:
Hello I saw you guys were having trouble please put me as the brainiest
Explanation:
1. Golgi Apparatus
2. Nucleus
3. Endoplasmic Reticulum
4. Mitochondrion
5. Ribosome
6. Lysosome
question. for the reaction below: a. estimate the gas phase enthalpy change using bond dissociation enthalpies from the owl table reference, not data from your text. click the references button and then click the tables link on the drop-down that appears. include algebraic sign and units. fill in the blank 1 b. is the reaction exothermic or endothermic? c. is the reaction likely to proceed spontaneously in the
Answers
a) Enthalpy change in specify chemical reaction is 126 kJ/mol.
b) The specify chemical reaction is endothermic reaction.
c) This is not a spontaneous reaction.
We have, a reaction as present below,
\( CH_3CH_3 + I^{.} -> CH_3CH_2^{.} + HI \\ \)
In this reaction, the reactant
\(CH_3CH_2-H\) bond is broken and H-I bond formed. So,
a) The standard enthalpy of reaction for a chemical reaction is defined as the difference between molar enthalpies of total reactant and total product and it is calculated for substances when they present in standard states.
Change in enthalpy = -297 + 423
= 126 kJ/mol.
b) It is endothermic reaction as change in en thakly is positive.
c) No,the reaction will not be spontaneous in the direction written.as, the enthalpy change is positive.
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I need description of the rocks with index fossils
Answers
Below brief description of each of these rocks:
Conglomerate: Conglomerate is a type of sedimentary rock that is made up of rounded pebbles that are cemented together. It forms from the accumulation of small rocks and pebbles that are carried and deposited by water. Limestone: Limestone is a type of sedimentary rock that is made up of calcium carbonate. It can form through a variety of processes, including the accumulation of shells and other marine debris, the precipitation of minerals from water, and the alteration of other rocks through chemical reactions.Basalt: Basalt is a type of igneous rock that forms from the solidification of lava. It is typically black or dark-colored, and it is composed of minerals such as plagioclase, pyroxene, and olivine. Basalt is a common rock on the earth's surface, and it is the most abundant type of rock in the ocean floor.Trilobite: Trilobite is not a rock, but rather a type of fossil that can be found in certain rock layers. Trilobites were marine arthropods that lived millions of years ago during the Paleozoic era. What is the rock layer about?Conglomerate: Conglomerate is a type of sedimentary rock that is characterized by its rounded pebbles and the cementing material that holds them together. The pebbles in conglomerate rocks can be made up of a variety of different rock types, and they are typically rounded due to the effects of weathering and erosion.
Therefore, Conglomerate is often found in areas where there is a high amount of water flow, such as along riverbeds or in coastal areas. It can be used for a variety of purposes, including as a building material, as a decorative stone, and in landscaping.
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Calculate the approximate volume of a 0.600 mol sample of gas at 15 °C and a pressure of
1.0 atm.
Answers
1) List known values.
sample: 0.600 mol
Pressure: 1.0 atm
Temperature: 15ºC
Constant: 0.082057 L⋅atm⋅K−1⋅mol−1
List unknown values
Volume:
2) Set the equation and solve for V.
\(PV=\text{nRT}\)\(\frac{PV}{P}=\frac{nRT}{P}\)\(V=\frac{nRT}{P}\)3) Converting to proper units.
15ºC + 273.15 = 288.15 K
4) Plug in known values.
n: 0.600 mol
R: 0.082057 L⋅atm⋅K−1⋅mol−1
T: 288.15 K
P: 1.0 atm
\(V=\frac{(0.600\text{mol)}(0.082057L\cdot\text{atm}\cdot K^{-1}\cdot mol^{-1})(288.15\text{ K)}}{1.0\text{ atm}}=14.18683\text{ L}\)The sample will occupy a volume of 14.19 L.
Calculate the standard reaction enthalpy for the reaction below:
3Fe2O3(s) → 2Fe3O4(s) + ½O2(g)
Answers
The standard reaction enthalpy for the given reaction is +235.8 kJ/mol.
What is the standard reaction enthalpy of reaction?The standard reaction enthalpy (ΔH°) for the given reaction is determined as follows:
Equation of reaction: 3 Fe₂O₃ (s) → 2 Fe₃O₄ (s) + ½ O₂ (g)
The standard enthalpy of formation values for Fe₂O₃ (s), Fe₃O₄(s), and O₂(g) is used to calculate the standard reaction enthalpy.
ΔH° = [2 × ΔH°f(Fe₂O₃)] + [½ × ΔH°f(O₂)] - [3 × ΔH°f(Fe₃O₄)]
where;
ΔH°f(Fe₂O₃) = -824.2 kJ/mol
ΔH°f(Fe₃O₄) = -1118.4 kJ/mol
ΔH°f(O₂) = 0 kJ/mol
ΔH° = [2 × (-1118.4 kJ/mol)] + [½ × 0 kJ/mol] - [3 × (-824.2 kJ/mol)]
ΔH° = -2236.8 kJ/mol + 0 kJ/mol + 2472.6 kJ/mol
ΔH° = 235.8 kJ/mol
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How long would it take to count 6.02 × 10^23 raisins, if you counted at a rate of one raisin per second?
(Please I need it quick)
Answers
Find the pH of a solution with a [H+] of 0.045M.
![Find the pH of a solution with a [H+] of 0.045M.](https://i5t5.c14.e2-1.dev/h-images-qa/contents/attachments/VRy6Ew2Y60ZemRmIjwniIimcYusQufhB.png)
Answers
Answer:
1.35Explanation:
The pH of a solution can be found by using the formula
\(pH = - log ([ {H}^{+} ])\)
From the question
[H+] = 0.045 M
We have
\(pH = - log(0.045) \\ = 1.346787...\)
We have the final answer as
1.35Hope this helps you
Answer:
1.35
Explanation:
Need a little help with chemistry
*If you don’t know, don’t put anything*
Answers
Answer:
1.2 kg
Explanation:
...
Can someone help me please
Answers
Three Chemistry students find a bottle of colorless liquid in the laboratory and each makes a different suggestions about the identity of its contents.
Josh: I think it is a reducing agent.
Matthew: I think it is an oxidizing agent.
Ricchard: I think it is neither a reducing agent nor an oxidizing agent.
Answers
Answer:
and the question is?
Explanation:
Use molecular orbital theory to predict the following properties of the F2- ion: (a) electron configuration; (b) bond order; (c) magnetic character (paramagnetic or diamagnetic); (d) whether the bond length is longer or shorter than in the F2 molecule; (e) whether the bond strength is greater or less than in the F2 molecule. Use the M.O. diagram for F2 in Figure 10.13 of Tro, Fridgen and Shaw as a starting point for this question.
Answers
The bond strength in F2- is expected to be weaker than in the F2 molecule. The additional electron in F2- introduces repulsion, destabilizing the bond and reducing its strength.
Predict the properties of the F2- ion using molecular orbital theory: (a) electron configuration, (b) bond order, (c) magnetic character, (d) bond length compared to F2, and (e) bond strength compared to F2?The F2- ion will have an additional electron compared to the F2 molecule. Using molecular orbital theory, we can determine the electron configuration of F2- as \((σ1s)^2(σ*1s)^2(σ2s)^2(σ*2s)^2(π2p)^4(π*2p)^4.\)
Bond order is calculated by subtracting the number of antibonding electrons from the number of bonding electrons and dividing the result by 2. In the case of F2-, there are 10 bonding electrons and 8 antibonding electrons. Therefore, the bond order is [(10 - 8) / 2] = 1.
The F2- ion has unpaired electrons, making it paramagnetic.
The bond length in F2- is expected to be longer than in the F2 molecule. This is due to the addition of an extra electron, which increases electron-electron repulsion, resulting in an elongation of the bond.
Note: It is important to refer to the specific molecular orbital diagram provided in Figure 10.13 of the mentioned textbook for precise information and calculations.
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What is the type of pollutant in waterways which can be toxic at high levels and is
present in the river mentioned in question 1?
Olead
OE. coli
Oammonial
Onitrates
Answers
The type of pollutant in waterways which can be toxic at high levels is nitrates.
What is pollutant?Pollutant is a substance that is introduced into the environment and has negative effects on living organisms and the environment. It can be either natural or man-made and can include air pollutants such as carbon dioxide, sulfur dioxide, nitrogen oxides, and particulate matter, as well as water pollutants such as nutrients, heavy metals, and toxic chemicals.
Nitrates are nitrogen-containing compounds and are often found in fertilizers, wastewater and agricultural runoff. Nitrates can lead to oxygen depletion in water and can be harmful to aquatic life and humans if consumed in high amounts. The River Avon in Warwickshire is known to have high levels of nitrates due to agricultural runoff.
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What are the three atomic particles found in an atom, and what are their charges?
Answers
Answer:
Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).The graphs below show the number of bass caught in March 2003 and March 2004. The moon symbols on the graphs show the phases of the moon during those months.
Do the graphs support the hypothesis that the number of fish caught is greatest during a full moon? Support your answer with evidence.
(science)
Answers
The moon becomes new when it lies between the earth and the sun. The three objects are roughly aligned (the definition of "approximate" is given below).
Thus, On the back side of the moon, the side we cannot see, is where the full lighted area of the moon is located. Similar to a new moon, a full moon has the earth, moon, and sun in roughly the same configuration.
However, because the moon is on the other side of the earth from us, the entire sunlit portion of the moon is facing us. The shaded area is completely obscured from vision.
When the moon is at a 90-degree angle with the earth and sun, it forms the first quarter moon and third quarter moon, both of which are frequently referred to as "half moons."
Thus, The moon becomes new when it lies between the earth and the sun. The three objects are roughly aligned.
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manufacturers make vegetable oils solid or semisolid at room temperature by .
Answers
Manufacturers make vegetable oils solid or semisolid at room temperature through a process called hydrogenation. Hydrogenation involves the addition of hydrogen gas to unsaturated vegetable oils, resulting in the conversion of some of the unsaturated fats into saturated fats.
This process increases the melting point of the oil and transforms it into a solid or semisolid form.
During hydrogenation, vegetable oils are heated and mixed with a catalyst, typically a metal catalyst like nickel, in the presence of hydrogen gas. The unsaturated fats in the oil undergo a chemical reaction called hydrogenation, where the carbon-carbon double bonds in the fatty acid molecules are converted into single bonds. This saturation process reduces the overall degree of unsaturation in the oil and increases its stability and solidification properties.
The hydrogenated vegetable oils, commonly known as trans fats, have a higher melting point and are solid or semisolid at room temperature. This property makes them suitable for various food applications, such as margarine, shortening, and bakery products, where a solid or semisolid texture is desired. However, it is worth noting that the consumption of trans fats has been linked to adverse health effects, and many manufacturers are now moving towards healthier alternatives and reducing the use of hydrogenated oils in their products.
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Manufacturers make vegetable oils solid or semisolid at room temperature through a process called hydrogenation.
Hydrogenation involves adding hydrogen gas to vegetable oils in the presence of a catalyst, typically nickel or palladium. This process causes the unsaturated fats in the oils to undergo a chemical reaction, converting them into saturated fats.
Saturated fats have a higher melting point and are solid or semisolid at room temperature, unlike the liquid form of unsaturated fats. By hydrogenating vegetable oils, manufacturers can increase their stability, improve texture, and extend shelf life. This transformation allows vegetable oils to be used as margarine, shortening, or in the production of solid or semisolid food products like baked goods and spreads.
Therefore, it is important to note that hydrogenation can result in the formation of trans fats, which have been associated with negative health effects. To address this concern, many manufacturers are transitioning to alternative methods or using healthier oils in their products.
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If you have gaseous carbon dioxide at 45°C and 6 atm of pressure, and you begin to cool it,
it will eventually turn into what physical state?
Answers
As a result, when the gas is cooled to a temperature below 45 °C, it will condense into a liquid condition. The pressure affects the precise temperature at which the gas will condense.
What happens to carbon dioxide when the pressure is raised above 1 atm?The slope of the solid-liquid equilibrium line for carbon dioxide is positive; when pressure is increased, the melting point rises.
What happens when sulphur is heated to 200 C at 1 atm from 80 C?Three triple points exist (a). (b) In an atmosphere, monoclinic is more stable than rhombic. (c) Sulfur changes state from liquid to vapour and back to liquid when heated from 80°C to 200°PC.
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