Gas has a volume V1 =200cm3, at a temperature T1=300K and at a pressure P1=150000pa.
At STP temperature T2 =273.15K, the pressure P2=101325pa and the volume V2 is given by;
"P1V1\/T1=P2V2\/T2"
Hence "V2= P1V1T2\/P2T1"
V2=150000*200*273.15/101325*300
V2=269.59cm3
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