In step 5, of the experiment, a student accidentally added 2.0g of Mg metal instead of Zn, to react with 5.0g of CuSO4 . How will this affect the result of the experiment?
A. The copper (II) sulfate solution would react with the Mg, because Cu is less active than Mg. However, the excess Mg would not react with the 6M HCl because Mg is less active than hydrogen.
B. There will be no effect in the final result, all the copper (II) sulfate will be converted to Cu.
C. The copper (II) sulfate solution would react with the Mg, because Cu is less active than Mg. However, not all the copper (II) sulfate was reacted to form Cu.
D. The copper (II) sulfate solution would not react with the Mg. This is because Cu is more active than Mg.
When a student accidentally adds 2.0g of Mg metal instead of Zn to react with 5.0g of \(CuSO_4\), the copper (II) sulfate solution would react with the Mg, because Cu is less active than Mg. However, not all the copper (II) sulfate reacted to form Cu. Therefore, option C is the correct answer
\(CuSO_4 + Mg \rightarrow Cu + MgSO_4\)
Copper (II) sulfate reacts with magnesium to form copper and magnesium sulfate, and the reaction is exothermic. As a result, the temperature of the solution increases.
When magnesium is added to a copper (II) sulfate solution, the magnesium displaces copper from copper (II) sulfate, forming magnesium sulfate and copper.
The addition of magnesium instead of zinc means that the copper (II) sulfate solution would react with magnesium rather than zinc. Magnesium has a lower reactivity than zinc, which means that it will displace copper from copper (II) sulfate instead of zinc.
However, not all the copper (II) sulfate will be reacted to form copper, since only a portion of the copper (II) sulfate is consumed by the reaction with magnesium.
Therefore correct option is c " the copper (II) sulfate solution would react with the Mg, because Cu is less active than Mg. However, not all the copper (II) sulfate was reacted to form Cu."
To learn more about Magnesium and Copper Sulfate reaction refer: https://brainly.com/question/20696794
#SPJ11
Round the following number to 3 significant figures:
15937
pls helpppp
Answer:
15900
Explanation:
I think hope this helps!! :D
Answer:
15900
Explanation:
Identify the correct formula for potassium hydroxide.
)
А)
КО
B)
КОН
C)
кон
D)
РОН
How many grams of water can be vaporized with 6500 J of energy? The heat of
vaporization for water is 2330 J/g.
Given :
The heat of vaporization for water is 2330 J/g.
To Find :
How many grams of water can be vaporized with 6500 J of energy.
Solution :
It is given that heat of vaporization for water is 2330 J/g.
Means 2300 J of heat is required to vaporize 1 g of water .
Let , n grams of water is produced by 6500 J of energy .
\(n=\dfrac{6500\ J}{2330\ J/g}\\\\n=2.79\ g\)
Therefore, 2.79 g of water will vaporize by 6500 J of energy .
Hence, this is the required solution .
Which of the following is a reasonable way of describing the density of a gas at STP
Answer:the answer is a
Explanation:
The density of a gas at standard temperature and pressure conditions is 1.40 grams per liter.
What are standard temperature and pressure conditions?Standard temperature and pressure are defined as a standard set of conditions required for experimental measurements which are established to allow comparison between different sets of data.
Standards which are commonly used are those International Union of pure and applied chemistry and national institute of standards and technology.These are not universally accepted standards but are the ones which are commonly used.
Standard conditions of pressure and temperature are necessary to define standard reference conditions used to express volumes of liquids and gases.These values are important to physicists, chemists ,engineers ,pilots and navigators.
Learn more about standard temperature and pressure,here:
https://brainly.com/question/29129606
#SPJ5
Write the correct formula for each compound named below. Show the from which it is formed.
Answer:
Explanation:
Sodium Chloride = Na⁺ + Cl⁻ = NaCl
Lithium bromide = Li⁺ + Br⁻ = LiBr
Magnesium fluoride = Mg ⁺² + F⁻ = Mg₂F.
Potassium Oxide = K⁺ + O⁻² = K₂O
Calcium sulphide = Ca⁺² + S⁻² = CaS
Aluminum Iodide = Al⁺³ + I⁻ = Al I₃
Barium bromide = Ba⁺² + Br⁻ = BaBr₂
Aluminum sulphide = Al⁺³ + S⁻ = Al₂S₃
Calcium Phosphide = Ca⁺² + P⁻³ = Ca₃P₂
Lithium Nitride = Li⁺ + N⁻³ = Li₃N
Magnesium Oxide = Mg⁺² + O⁻² = MgO
Aluminum Fluoride = Al⁺³ + F⁻ = AlF₃
Lithium Oxide = Li⁺ + O⁻² = Li₂O
Beryllium iodide = Be⁺² + I⁻ = BeI₂
What is the limiting reactant in a reaction where 10.0 mol of iron is treated with 12.0 mol of bromine? The product that forms is FeBr3. First, write and balance the chemical equation. Next, calculate the moles of FeBr3 that can be made from 10.0 mol of Fe. Then calculate the moles of FeBr3 that can be made from 12.0 mol of bromine. The smaller amount of FeBr3 reveals the limiting reactant.
Answer: The limiting reagent in the reaction is bromine.
Explanation:
Limiting reagent is defined as the reagent which is completely consumed in the reaction and limits the formation of the product.
Excess reagent is defined as the reagent which is left behind after the completion of the reaction.
Given values:
Moles of iron = 10.0 moles
Moles of bromine = 12.0 moles
The chemical equation for the reaction of iron and bromine follows:
\(2Fe+3Br_2\rightarrow 2FeBr_3\)
By the stoichiometry of the reaction:
If 3 moles of bromine reacts with 2 moles of iron
So, 12.0 moles of bromine will react with = \(\frac{2}{3}\times 12.0=8moles\) of iron
As the given amount of iron is more than the required amount. Thus, it is present in excess and is considered as an excess reagent.
Hence, bromine is considered a limiting reagent because it limits the formation of the product.
Thus, the limiting reagent in the reaction is bromine.
How many electrons are there in the N shell of an element?
\( \huge \mathbb \pink{ANSWER:}\)
2,5 the elctrons arw there in the N shell of an element.Explanation:
Hope it helps ^•^
Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons
A 34.0 g sample of the compound X3O2 contains 9.05 g of oxygen atoms. What is the molar mass of element X?
Answer: A 30.6 g sample of the compound X2O3 contains 14.4 g of oxygen atoms. What is ... To determine the identity of X we need to determine its atomic mass. We know ... ratio between the elements. 54.33 g C ×. 1 mol C. 12.01 g C. = 4.524 mol C. 9.15 g H × ... 9.08/2.270 = 4; thus, the compound's empirical formula is C2H4O. 6.
Explanation: I hope this helps ;)
What is an example for "chemical equations"?
Answer:
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.
Explanation:
Which statement illustrates the difference between a chemical reaction and a nuclear reaction?
A: A nuclear reaction releases more energy per gram and appears to violate the law of conservation of mass.
B: A nuclear reaction releases less energy per gram and appears to violate the law of conservation of mass.
C: A nuclear reaction releases more energy per gram but does not appear to violate the law of conservation of mass.
D: A nuclear reaction releases less energy per gram but does not appear to violate the law of conservation of mass.
I will give the crown.
Answer:
Which statement illustrates the difference between a chemical reaction and a nuclear reaction?
Explanation:
Which statement illustrates the difference between a chemical reaction and a nuclear reaction?
he number of gas particles in a container will have the greatest impact on _____.
The number of gas particles in a container will have the greatest impact on pressure.
The number of gas particles in a container has the greatest impact on pressure because pressure is directly related to the frequency and magnitude of molecular collisions with the container walls.
When gas particles are in motion, they collide with each other and with the walls of the container. These collisions exert a force on the walls, which we perceive as pressure. The more gas particles there are in the container, the greater the number of collisions with the walls per unit of time.
According to the kinetic theory of gases, the pressure of a gas is proportional to the average kinetic energy and the frequency of collisions of the gas particles. Increasing the number of gas particles increases the frequency of collisions, resulting in more forceful and frequent impacts on the container walls. This leads to a higher pressure.
Conversely, if the number of gas particles decreases, there are fewer collisions occurring per unit of time, resulting in a lower pressure. Therefore, the number of gas particles in a container has the greatest influence on the pressure exerted by the gas inside.
To learn more about kinetic energy click here;
brainly.com/question/26472013
#SPJ11
A) Calculate the percent ionization of formic acid (HCO2H) in a solution that is 0.311 M in formic acid and 0.189 M in sodium formate (NaHCO2). The Ka of formic acid is 1.77 × 10-4. ( Answer:0.0952)
B)5) Suppose you have just added 100.0 ml of a solution containing 0.5000 moles of acetic acid per liter to 400.0 ml of 0.5000 M NaOH. What is the final pH? The Ka of acetic acid is 1.770× 10-5. ( Answer:13.48)
A) The percent ionization of formic acid is 0.0952.
B) The final pH is 13.48.
How to calculate percent ionization and final pH?Explanation for Part A:
When calculating the percent ionization of formic acid (HCO₂H), we consider the concentration of H⁺ ions compared to the initial concentration of formic acid. In this scenario, we have a solution with a concentration of 0.311 M formic acid and 0.189 M sodium formate (NaHCO₂). Since sodium formate dissociates completely, it serves as a source of H+ ions.
In this case, we can assume that the contribution of H⁺ ions from sodium formate is significant compared to the ionization of formic acid. Therefore, the concentration of H⁺ ions is equal to the concentration of sodium formate, which is 0.189 M.
To calculate the percent ionization, we use the formula:
percent ionization = (concentration of H⁺ ions / initial concentration of formic acid) x 100
Substituting the values, we have:
percent ionization = (0.189 / 0.311) x 100 = 0.0952 x 100 = 9.52%
Therefore, the percent ionization of formic acid in the given solution is 0.0952 or 9.52%.
Explanation for Part B:
When mixing acetic acid (CH₃COOH) with sodium hydroxide (NaOH), a neutralization reaction occurs. Acetic acid is a weak acid, while sodium hydroxide is a strong base. The reaction between the two results in the formation of water and sodium acetate (CH₃COONa).
To determine the final pH, we need to consider the reaction and the resulting species in the solution. In this case, we have added 100.0 ml of a solution containing 0.5000 moles of acetic acid per liter to 400.0 ml of 0.5000 M NaOH.
Since acetic acid is a weak acid, we can assume that its ionization is negligible compared to the complete dissociation of NaOH. Therefore, we can consider the solution as a strong base solution.
When a strong base reacts with water, it produces hydroxide ions (OH⁻) which leads to an increase in the concentration of OH⁻ ions. To determine the pH, we need to calculate the concentration of OH⁻ ions, which can be done by considering the moles of NaOH and the total volume of the solution.
Using the given values, we have:
Moles of NaOH = 0.5000 M x 0.4000 L = 0.2000 moles
Total volume of the solution = 0.1000 L + 0.4000 L = 0.5000 L
Concentration of OH⁻ ions = moles of NaOH / total volume of the solution
= 0.2000 moles / 0.5000 L
= 0.4000 M
Since pH is defined as the negative logarithm (base 10) of the concentration of H⁺ ions, we can use the pOH to determine the pH. The pOH is equal to -log10[OH⁻] in this case.
pOH = -log10[0.4000] = 0.3979
Finally, we can determine the pH using the relationship between pH and pOH:
pH = 14 - pOH = 14 - 0.3979 = 13.6021 ≈ 13.60
Learn more about ionization
brainly.com/question/1602374
#SPJ11
A sound wave has a frequency of 20 Hz and a wavelength of 100 m. What is speed of the wave
The speed of a wave can be calculated using this formula:
v = f x λ
Where:
v is the wave speed in metres per second, m/s
f is the frequency in hertz, Hz
λ (lambda) is the wavelength in metres, m
Calculation:
Given:
f = 20 Hz
λ = 100m
Using the equation:
v = f x λ
v = 20 x 100
v = 2000 m/s
Therfore, the speed of the wave is 2000 m/s
A sound wave has a wavelength of 100 m and a frequency of 20 Hz. The wave's speed is 2× 10^3 m/s.
assuming frequency = 20 Hz and wavelength = 100 m
utilized concept: v= = 20×100 = 2×10³ m/s
Why is frequency important?The frequency in physics is the quantity of waves passing a fixed location in a unit of time. It also indicates how many cycles or vibrations a body in periodic motion experiences in a given unit of time.
How would you define sound?A sort of energy created by vibrations is sound. The molecules of the air surrounding an item vibrate as a result.. These molecules vibrate because they collide with nearby molecules, which also vibrate as a result.
To know more about Frequency, visit-
https://brainly.com/question/14316711
#SPJ2
For each illustration below, identify the beginning state of matter,phase change that is happening, and the ending state of matter. • Beginning state of matter• Phase change type • Ending state of matter
The first one appear to be a pan with some liquid heating up.
The beginning state is liquid, the phase change type is a vaporization and its ending state is gas.
The second one seems to be a ice cube melting.
Its beginning phase is solid, the phase change type is fusion, and its ending state is liquid.
The third one is water, or other liquid, making clouds.
The beginning state is liquid, the phase change type is a vaporization and its ending state is gas.
The fourth illustration seems to be an aluminium can. There aren't really a phase change happening, but when we open the aluminium can containing gaseous drink, there are molecules of gas diluted into the liquid and some of it encouter each other to make a bubble of the gas and is released. It is not an actually phase change, it is the reverse process of diluting gas into liquid. Initially it is diluted gas, it gets released and in the end it is in gas phase.
IWhich of the following solutions would be most likely to have the highest water concentration?
Multiple Choice hypertonic solution isotonic solution hypotonic solution water concentration and tonicity of a solution cannot be compared
"Hypotonic solution," refers to a solution with the highest water concentration due to its lower solute concentration compared to the other options, leading to water influx into cells.
A hypotonic solution would be most likely to have the highest water concentration. In a hypotonic solution, the solute concentration is lower than that inside the cell or compared to another solution. As a result, water tends to move into the cell or the solution to equalize the concentration.
When a cell is placed in a hypotonic solution, water molecules will move into the cell through the process of osmosis. This influx of water increases the water concentration inside the cell, leading to cell swelling or even bursting in extreme cases.
Compared to hypertonic and isotonic solutions, a hypotonic solution has a lower solute concentration, allowing for a higher concentration of water molecules. This results in a higher water concentration in the solution. It's important to note that the concept of tonicity is related to the relative solute concentrations between two solutions and their effect on cell osmosis. In this case, a hypotonic solution is characterized by a higher water concentration compared to the other options.
learn more about Hypotonic solution here:
https://brainly.com/question/28020628
#SPJ11
1. To check acidic or basic character of t h e substance
andneutralization
Material Required: Amla, Tamarind, orange, ENO, soap,
window cleaner, china rose as an indicator. Procedure:
1. Take out Amla, tamarind, and orange and check
theircolour in the china rose solution. 2. What are the colour changes of these things?
3. Record your observation. Take out the rest of the
things and check their colour change also in the china
rose solution (indicator). Now mix the solution of any two i. E. One acid and one base
in equal amounts and check the colour of this solution in
china rose solution. Record your observations
The experiment involves observing the color changes of various substances in the presence of a china rose indicator to determine their acidic or basic nature. The neutralization process can also be observed by mixing an acid and a base and noting the resulting color change.
In this experiment, the aim is to determine the acidic or basic nature of different substances and to observe the neutralization process. The materials required include amla, tamarind, orange, ENO (an antacid), soap, window cleaner, and china rose as an indicator. The procedure is as follows:Take amla, tamarind, and orange and observe their colors in the china rose solution (indicator).Note any color changes that occur in the substances when placed in the china rose solution.Record your observations.Next, take the remaining substances (ENO, soap, window cleaner) and observe their color changes when placed in the china rose solution.Record your observations.To observe neutralization, mix equal amounts of the solution of an acid (e.g., orange juice) and a base (e.g., ENO) and check the color of this solution in the china rose solution (indicator).Record your observations.By observing the color changes in the china rose solution, you can determine whether a substance is acidic, basic, or neutral. Acidic substances will exhibit a different color change compared to basic substances. The color change in the neutralization mixture may indicate a shift towards neutrality.For more questions on neutralization
https://brainly.com/question/23008798
#SPJ8
warm-blooded animals employ ______ to regulate the temperatures of the body
a) radiation
b) conduction
c) convection
Warm-blooded animals employ radiation to regulate the temperatures of the body. Therefore, the correct option is option A.
What is warm-blooded animal?The term "warm-blooded" relates to animal species that bodies sustain a temperature higher than the ambient temperature. Homeothermic creatures (birds and mammals included) control metabolic activities to maintain a constant body temperature. The degree of thermoregulation in other animals varies.
Because animals employ more than two methods of temperature regulation, the terms "warm-blooded" and "cold-blooded" have become derogatory within the scientific community. Warm-blooded animals employ radiation to regulate the temperatures of the body.
Therefore, the correct option is option A.
To learn more about warm-blooded animal, here:
https://brainly.com/question/11278471
#SPJ9
16) What is the aluminum ion concentration in a solution that is 0.646 M in aluminum sulfate
Aluminum ion has a charge of 3+, Al³⁺, and sulfate is SO₄²⁻, so the compound aluminum sulfate has to have a number of aluminum and sulfate such that the final charge is zero, so the proportion on aluminum sulfate is:
\(Al_2(SO_4)_3\)That way we have 6+ and 6-, so neutral compound.
This means that for 1 mol of aluminum sulfate, we have 2 moles of aluminum ion. The molar concentration is the number of moles of solute divided by the volume of solution, so it is directly proportional to the number of moles.
So, we can use a rule of three as follows:
aluminum ion --- aluminum sulfate
2 --- 1
x --- 0.646 M
So:
\(\begin{gathered} \frac{2}{x}=\frac{1}{0.646M} \\ 2\cdot0.646M=x\cdot1 \\ 1.292M=x \\ x=1.292M \end{gathered}\)So, the concentration of aluminum ion in this solution is 1.292 M.
What is the correct formula (IUPAC) for sodium iodide
Answer:
The correct formula is...
Nal
The specific heat of liquid H2O is 4.184 J/g°C. If 32.7 grams of water are heated from
12 °C to 77 °C, how much energy is required?
Look at picture
ASAP please will mark as brainlist don’t got much time
Answer:
8893.092J
Explanation:
energy= mass × specific heat capacity of water × change in temperature
=32.7×4.184×(77-12)
=8893.092J
Which of the following elements have the highest melting points?
A
Metals of the 5d transition series
B
All the d block transition metals have melting points that are close to each other
C
Metals belonging the 3d transition series
D
Metals of the 4d transition series
Metals belonging to the 5d transition series have the highest melting points (option A).
The transition series is a group of elements that are located between the s and p blocks on the periodic table.
The d-block elements are referred to as transition metals because they contain electrons in d orbitals and because they form a transition series of elements with various oxidation states in their compounds.
Melting Point: It is the temperature at which a solid substance changes into a liquid state. Different factors influence the melting point of elements including atomic radii, atomic mass, and the number of electrons present in the outermost shell.
In general, metals have high melting points than non-metals, and the transition series metals have high melting points than non-transition series metals.
The 5d transition metals have the highest melting points of all the d-block transition metals. This is because they have the most electrons in their d-orbitals. The 4d transition metals have lower melting points than the 5d transition metals, and the 3d transition metals have the lowest melting points of all the d-block transition metals.
Thus, metals of the 5d transition series have the highest melting points (option A) .
To learn more about transition metals :
https://brainly.com/question/2879928
https://brainly.com/question/2879928
Which of the definitions below is best for the word molecule? Atoms of different elements chemically joined together More than one atom chemically joined together A type of compound More than one atom of the same type chemically joined together A group of atoms together
Answer: More than one atom of the same type chemically joined together
Explanation:
An atom is the smallest unit of any matter which may or may not have independent existence. Example: Argon (Ar) is an element which exist as Ar atom only.
Molecule is the smallest unit of any matter which always have independent existence. For example: Hydrogen (H) is an element which can exist in nature as \(H_2\) molecule only.
Atoms of different elements chemically joined together is called as a compound. Example: \(H_2O\) is a compound formed by chemical combination of hydrogen (H) and oxygen (O) atom.
What is the main factor that determines how well two substances mix together?
Answer:
I believe it is density.
Explanation:
Hope this helps!
The hoverboard is not the best way to get to school
Write a CER 3 evidence and 3 reasonings
The justification provides the "why" and "how" the evidence substantiates the assertion.
What is justification?Justification is defined as the act, procedure, or declaration that makes sinners righteous in God's eyes. The term "research justification" refers to the justification for conducting the research, which includes a description of the research's design and methodology.
Your students may offer the following justification: Matter is air (claim). When we added more air to the ball, we discovered that the weight of the ball rose (evidence). This demonstrates that weight, a property of matter, exists in air (reasoning).
Thus, the justification provides the "why" and "how" the evidence substantiates the assertion.
To learn more about justification, refer to the link below:
https://brainly.com/question/27795498
#SPJ1
calculate the ????∘ for the following equation. use these standard potentials.clo−4(aq) 6h3o (aq) 6br−(aq)⟶3br2(aq) clo−(aq) 9h2o(l)
The question is asking for the standard reduction potential (E°) of the given equation. To calculate E°, we need to use the standard reduction potentials of the species involved. The reduction potential for the half-reaction is determined by subtracting the reduction potential of the reactant from the reduction potential of the product.
Given the equation:
ClO₄⁻(aq) + 6H₃O⁺(aq) + 6Br⁻(aq) ⟶ 3Br₂(aq) + ClO⁻(aq) + 9H₂O(l)
We can break it down into two half-reactions:
1. ClO₄⁻(aq) + 8H⁺(aq) + 6e⁻ ⟶ ClO⁻(aq) + 4H₂O(l)
2. 6Br⁻(aq) ⟶ 3Br₂(aq) + 6e⁻
Now, we can look up the standard reduction potentials for each half-reaction. Subtracting the reduction potential of the reactant from the reduction potential of the product for each half-reaction gives us the reduction potentials. Finally, sum the reduction potentials of both half-reactions to get the overall reduction potential of the equation.
To know more about reduction potential visit:-
https://brainly.com/question/33594918
#SPJ11
c) the major organic product when 3-methylbut-1-ene reacts in dilute sulfuric acid (h2so4).
The major organic product when 3-methylbut-1-ene reacts in dilute sulfuric acid (\(H_2SO_4\)) is 2-methylbutan-2-ol. This reaction is an example of an electrophilic addition reaction.
1. The first step in this reaction is the protonation of the double bond in 3-methylbut-1-ene by the sulfuric acid. This creates a carbocation intermediate.
2. The carbocation intermediate is then attacked by a water molecule, which donates a proton to form the alcohol group.
3. The final step is the deprotonation of the alcohol group by another water molecule to form the final organic product, 2-methylbutan-2-ol.
The overall reaction can be represented by the following equation:
3-methylbut-1-ene + \(H_2SO_4\) → 2-methylbutan-2-ol
In conclusion, the major organic product of this reaction is 2-methylbutan-2-ol, which is formed through an electrophilic addition reaction involving the protonation of the double bond, followed by the attack of a water molecule and deprotonation.
For more about organic product:
https://brainly.com/question/13513481
#SPJ11
Ice has a definite size and shape. Liquid water has a definite size, but not a definite shape. What is water in its third state?
Answer:
The third state of water is the gaseous state ( water vapor )
Explanation:
Which are steps of mitosis? Select 4 options.
prophase
metaphase
interphase
anaphase
telophase
Answer:
Prophase, metaphase, anaphase, telophase
Explanation:
if a sample of corn syrup has a mass of 35 grams and a volume of 25 mL calculate its density
The formula for finding Density is Mass over Volume.
Explanation:
So 35g over 25ml