If a 018 G Sample of Aluminum Metal Is Dropped into 400

If a 0.18 g sample of aluminum metal is dropped into 400 mL of 6 M HCl, hydrogen gas is evolved. The hydrogen evolved is collected over water, so the gas collected is a mixture of water vapour (vapour pressure = 23.8 mm Hg) and hydrogen gas. If the external pressure is 1.02 atm and temperature is 25?C, what will be the total volume of gas collected in L?

A) 6.7 x 10^-3 L
B) 0.010 L
C) 0.22 L
D) 0.25 L
E) 0.99 L