If O2 is collected over water at 40.0°C and a total pressure of 739 mmHg , what volume of gas will be collected for the complete reaction of 24.93 g of NiO?
the vapor pressure of water at 40.0°C is 55.4 mmhg.
the molar mass of NiO is 74.69 g/mol.
760 mmhg = 1 atm
pv = nrt where r = 0.08206 (l atm)/(mol k)