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Veseljchak [2.6K]
3 years ago
7

Scientists classify rocks into three different types. What is the main basis for the classification system they chose? color of

the rock shape of the rock how the rock formed who discovered the rock
Chemistry
2 answers:
vladimir2022 [97]3 years ago
8 0
How the rock formed.
arsen [322]3 years ago
4 0
How the rock formed is the correct answer

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a sample of helium occupies a volume of 101.2 mL at a pressure of 790 mmHg. at what pressure would the volume be 120 mL?
AveGali [126]

Answer : The final pressure will be, 666.2 mmHg

Explanation :

Boyle's Law : It is defined as the pressure of the gas is inversely proportional to the volume of the gas at constant temperature and number of moles.

P\propto \frac{1}{V}

or,

P_1V_1=P_2V_2

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P_1 = initial pressure = 790 mmHg

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Now put all the given values in the above equation, we get:

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Therefore, the final pressure will be, 666.2 mmHg

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