A gas occupies a volume of 30.0 dm\(^3\) at S.T.P. What volume would it occupy at 91\(^0\)C and 380 mm Hg?
20. 0dm3
40.0dm3
60. 0dm3
80. 0dm3
100. 0dm3
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You were given v=30.0dm^3 at S.T.P(T=273, P=760mmHg) and was told to find v, if T=91degree and P=380mmHg.
V1=30dm^3, T1=273, P1=760mmHg, V2=?, T2=91+273=364, P2=380mmHg.
P1V1/T1=P2V2/T2
V2=P1V1T2/P2T1
V2=760*30*364/380*273
V2=80.0dm^3

Here is an explanation:
You were given v=30.0dm^3 at S.T.P(T=273, P=760mmHg) and was told to find v, if T=91degree and P=380mmHg.
V1=30dm^3, T1=273, P1=760mmHg, V2=?, T2=91+273=364, P2=380mmHg.
P1V1/T1=P2V2/T2
V2=P1V1T2/P2T1
V2=760*30*364/380*273
V2=80.0dm^3

p1v1/T1=p2V2/T2
V1=30dm3
p1= 760mmHg
T1= 273k
P2= 380mmhg
T2= 364k
V2=?
760*30/273=380*V2/T2
V2= 760*30*364/380*273
V2=8299200/103740
V2=80.0 dm3

Here is an explanation:
according to d Charles law...v1 is 30.00dm3 p1 is 380hhmg t1 is 91°c while d constant temperature and pressure be as 237k and 760hhmg which will rep. t2 and p2
>v1p1/t1=v2p2/t2
substitute d figures and solve u will get 80.0dm3 d final ans

explanations are not available how will I know how to get the answers given to me?

Combined Gas Law
P1V1/T1 = P2V2/T2
V1=30.0dm^3, V2= ?, T1=273k (at S.T.P), T2= 91+273k= 364k, P1=760mmHg (at S.T.P), P2=380mmHg
Formula: P1V1/T1 =P2V2/T2
Therfore V2 = P1V1T2/ P2T1= 760*30*364/380*273=
V2=80.0dm^3.„




