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Paha777 [63]
2 years ago
14

8. If the temperature of a piece of steel decreases, what happens to its density?

Chemistry
1 answer:
Verdich [7]2 years ago
3 0

Answer:

I think the answer is the 3rd one

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True or false: The nucleus of an atom contains protons and neutrons.
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Answer:

true

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How much of a 0.250 M sucrose solution must be used to prepare 400.0 mL of a 0.0310 M solution
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Which of the following gases will have the highest velocity at a given temperature?
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Prove that PV = nRT.​
qaws [65]

Find your answer in the explanation below.

Explanation:

PV = nRT is called the ideal gas equation and its a combination of 3 laws; Charles' law, Boyle's law and Avogadro's law.

According to Boyle's law, at constant temperature, the volume of a gas is inversely proportional to the pressure. i.e V = 1/P

From, Charles' law, we have that volume is directly proportional to the absolute temperature of the gas at constant pressure. i.e V = T

Avogadro's law finally states that equal volume of all gases at the same temperature and pressure contain the same number of molecules. i.e V = n

Combining the 3 Laws together i.e equating volume in all 3 laws, we have

V = nT/P,

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(constant = general gas constant = R)

V = RnT/P

by bringing P to the LHS, we have,

PV = nRT.

Q.E.D

6 0
2 years ago
Doing Science plz help
Murljashka [212]

Answer:

My guess is b or c but its robably wrong

Explanation:

I just also need points sorry <3

4 0
3 years ago
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