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Finding Volume Using Van der Waals Equation

Volume of gas collected is 250ml at 26 degrees celcius at 1atm.if pressure at same temp is 25torr number of mole of O2 gas is ?
2KClO3 (s) - 2KCl (s) + 3O2 (g)

Solution Preview

If Temperature is same, then P1V1 = P2V2
or 760*250 = ...

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