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andreyandreev [35.5K]
3 years ago
10

Please help this is due soon

Chemistry
2 answers:
denis-greek [22]3 years ago
6 0
It’s b use the formula
Lubov Fominskaja [6]3 years ago
4 0
It’s b 20g/cm3 I hope this helps
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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?
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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

where,

P_1 = initial pressure = 790 mmHg

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

790mmHg\times 101.2mL=P_2\times 120mL

P_2=666.2mmHg

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