A sample of 100 g NaHCO3 decomposes to yield solid Na2CO3 + H2O(g) + CO2(g) in a 5 liter container that was heated to 160 degrees centigrade. Some of the original solid remained and total pressure in container was 7.76 atms when equilibrium is reached. Calculate number of moles of H2O(g) present at equilibrium How many grams of original solid remain