1. If 0.545 grams of potassium reacts with an excess amount of water, what volume of H2 gas will be produced at 24 oC and 0.977 atm?

2. Metal carbonates react with acid to produce a salt, water and carbon dioxide gas as seen in the reaction below.

Na2CO3(s)+2HCl(aq)2NaCl(aq)+H2O(l)+CO2(g)

If 445 mL of 2.83 M HCl reacts with an excess amount of Na₂CO₃, what volume of CO₂ gas at STP will be produced?

answer in L