Stoichiometry 4ESO

1. 250mL of hidrochloric acid 1 M react with a volume of calcium hydroxide 0.25M, so that the final products are all neutral. a) Write and balance the chemical equation. b) Calculate the volume of Ca (OH)2 solution, the mass of salt and the volume of water produced.
   
2. 450g of 95% Alluminum sample react With air. How much Alluminium(lll)oxide will we produce? How much air at 2atm and 100°C will we need. P (atm)V(L)=nRT(K) R=0.082
3. 11.2 L of propane  (C3H8) in NNCC  burn with oxígen. The gaseous products are collected in the same recipient (=V) at 50°C. What will be the new pressure?