Chemistry Problem Help

Ok, so i’ve been trying to find a way to solve this problem, i feel like im really close to cracking it but i end up with a wrong answer:
“A Student reacted the following unkknown metal, M, with HCl and collected the following data: mass of metal = 0.300g, volume of water displaced= 227.3mL, temperature of H2 (hydrogen gas) = 25C, Barometric pressure = 760.0torr, volume of HCl= 20.0mL, molarity of HCl = 1.500 mol/L, and volume of NaOH = 36.0mL. If the metal, M, had an atmoic weight of 50.0 and reacted to produce MCl3, what was the molarity of the NaOH solution?”
Answer is : 0.333 molarity NaOH
Any help would be appreciated. This might help you guys:
-remember of the formula PV=nRT to find any info. on hydrogen gas
-Unbalanced equation is M + HCl——>MCl3 +H2
-Pressure of water is 23.8torr so the pressure of H2 is 736.2
-Gas constant, R = 62.4 L*torr/K*mol
Answer #1
try doing it again using Pressure as pascals. gas constant value is 8.31 in terms of pascals. duno what to do with the barometric pressure