3.88 g sample gas 1002 mmHg 5.00 L 22℃ 1120 mL 105℃

3.88 g sample gas 1002 mmHg 5.00 L 22℃ 1120 mL 105℃

 

 

3.88 g of a sample of gas has the pressure of 1002 mmHg

at the volume of 5.00 L and temperature of 22℃.

Calculate grams of gas

if the volume is changed to 1120 mL and temperature to 105℃.

 

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PV = nRT 로부터,

( 참고 https://ywpop.tistory.com/3097 )

 

n = PV / RT

= [(1002/760) (5.00)] / [(0.08206) (273.15+22)]

= 0.272176 mol

 

 

 

몰질량 = 3.88 g / 0.272176 mol

= 14.2555 g/mol

( 참고 https://ywpop.tistory.com/7738 )

 

 

 

n = PV / RT

= [(1002/760) (1.120)] / [(0.08206) (273.15+105)]

= 0.0475857 mol

 

 

 

0.0475857 mol × (14.2555 g/mol) = 0.678 g

 

 

 

답: 0.678 g