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oee [108]
2 years ago
10

One mole of copper has a mass of 63.5 grams. Approximately how many atoms of copper are present in one mole of copper?

Chemistry
1 answer:
quester [9]2 years ago
7 0

Answer: 6*10^23 atoms

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Can someone please help me?
Olin [163]

Answer:

c.)the reactants have the same mass as the products

Explanation:

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

hope it helps!

8 0
3 years ago
Determine the maximum number of moles of product that can be produced from 7.0 mol al and 8.0 mol cl2 according to the equation
Vilka [71]
The balanced chemical reaction is

<span>2al + 3cl2 = 2alcl3

To determine the maximum amount of product, we need to determine which is the limiting reactant. Then, use the initial amount of that reactant to calculate the amount of the product that would be produced. We do as follows:

7 mol Al (3 mol Cl2 / 2 mol Al) = 10.5 mol Cl2
8 mol Cl2 ( 2 mol Al / 3 mol Cl2) = 5.3 mol Al
Thus, it is Cl2 that is the limiting reactant.

8 mol Cl2 ( 2 mol AlCl3 / 3 mol Cl2) = 5.3 moles of AlCl3 is produced</span>
5 0
3 years ago
Which of the following is an example of chemical energy being used?
algol13

I feel like it's C. or D. but I guess it's C.

8 0
2 years ago
A hot air balloon has an air vent that keeps the air pressure inside and outside the same. Allen observes that a hot air balloon
DedPeter [7]

Answer:

B - The high temperature makes the gas molecules spread apart according to Charles's law because this law describes how a gas will behave at constant pressure.

Explanation:

Charle's Law describes the relationship between temperature and volume, where increased temperature leads to increased volume. When volume is increased, that means the gas molecules are more spread apart and have more random motion. Therefore, the answer is B.

6 0
3 years ago
What does ultraviolet light from the sun do with oxygen gas.
g100num [7]

Answer:

Gases in Earth's atmosphere form a protective layer

Nitrogen, oxygen and ozone molecules in the upper atmosphere and stratosphere absorb ultraviolet light from the Sun, providing a shield that prevents this radiation from passing to the Earth's surface.

Explanation:

i got this from  

...www.aeronomie.be

3 0
3 years ago
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