Posted by **kelly** on Thursday, October 28, 2010 at 1:14am.

A given mass of gas occupies a volume of 449 mL at 25°C and 740 mmHg. What will be the new volume at STP?

- chemistry -
**bobpursley**, Thursday, October 28, 2010 at 2:43am
Use the combined gas law:

P2V2/T2= P1V1/T1

V2=P1V1T2/P2T1

- chemistry -
**Matilda**, Saturday, January 18, 2014 at 10:56am
Using the gas equation,

V1=499ml; T1=25C+273K=298

P1=740mmHg

At s.t.p

P2=760mmHg; T2=273K; V2=?

V2= 499*740*273 /760*298

=445.1 ans

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