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diff --git a/1427/CH25/EX25.1/25_1.sce b/1427/CH25/EX25.1/25_1.sce
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+++ b/1427/CH25/EX25.1/25_1.sce
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+//ques-25.1
+//Finding pressure exerted in a vessel
+clc
+m1=2;//mass of ethane given (in g)
+m2=3;//mass of CO2 given (in g)
+M1=30;//molar mass of ethane (in g/mol)
+M2=44;//molar mass of CO2 (in g/mol)
+V=5;//volume of vessel (in L)
+T=273+50;//temperature (in K)
+R=0.0821;//(in atm L/K/mol)
+n=m1/M1+m2/M2;//moles of gas
+P=(n*R*T)/V;//pressure
+printf("The pressure exerted in the vessel is %.4f atm.",P);