When 1.53 grams of silver metal are dropped in 500. mL of 2.0 M acetic acid, how many liters of gas are evolved at STP?

2 answers

See your post above on HCN.
Let me show you my work.

2Ag+2C2H4O2=2AgC2H3O2+H2

I found M of Ag 0.0142 to give me M of H 7.09x10-3
when I plug it back into the equation Pv=nRT I got .0158 L. I put it in as my answer and it tells me I forgot to check something. What am i doing wrong?