Could someone help with as many of these as they can? 1.how many moles of h20 are needed to make 0.82 moles of NaOH
2. if a reaction used 22.6g of Na2O how many moles of H2O are needed to react with it
3. how many grand of NaOH would be formed by placing 3.64g of Na2O in excess water​

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)