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Gnom [1K]
2 years ago
13

Calculate the mass of one mole of

Chemistry
1 answer:
stepladder [879]2 years ago
4 0

Answer:

(a) Molar mass of ca= 40g/mol

(b) O2= 16 * 2 = 32g/mol

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#12 please! worth 40 points
Serga [27]
Okay so because of the difference in density a simple method for telling the difference between the two is to put a sample in a container with oil, because water has a higher density than the oil it would sink to the bottom but alcohol on the other hand is lighter than oil and would float on top of the oil.

However with this question I think that what you would do is use the ice to find out what the substance is, it would float on top of the liquid if it were water because the water is denser than ice but the ice would sink if it was alcohol because the alcohol is less dense than ice. 


I hope this helps you, good luck : )

3 0
3 years ago
how does a decrease in potential energy during a chemical rwaction relate to the temperature of the surroundings​
blondinia [14]

Answer: If the potential energy of the reaction system decreases, then kinetic energy in the surroundings increases and the temperature of the surroundings rises

Explanation:

3 0
2 years ago
A scientist stores a very large number of particles in a container. In order to determine the number of particles, the scientist
Leni [432]

When the temperature and the volume of the gas stored in the container are high then the number of the moles will be measured accurately. Thus, options A and B are correct.

<h3>What is the ideal gas law?</h3>

The ideal gas law is the establishment of the relation between the elements like the moles, pressure, temperature, and the volume of the gas containing the particle.

The ideal gas states:

PV = nRT

With an increase in the temperature, the number of particles that collides increases as the kinetic energy increases. The particle of the container is more when the volume of the gas is more.

Therefore, in options A and B high temperature and volume increase the accuracy.

Learn more about ideal gas here:

brainly.com/question/14552813

#SPJ1

6 0
2 years ago
In a coupled reaction, energy needs to be created to drive a second reaction forward. True or false
erastovalidia [21]

Answer:

I would say false.

Explanation:

Hope it helps:)

5 0
2 years ago
2. What will you change (the independent variable) in each test?
skad [1K]

Answer:the other vaiabable

Explanation:

8 0
3 years ago
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