Calculate the enthalpy change for the reaction CaCO3(g)→CaO(s)+CO2(g) , from the following equations: 2Ca(s)+O2(g)→2CaO(s) ΔH=−1270kJ 2Ca(s)+2C(s)+3O2(g)→2CaCO3(s) ΔH=−2414kJ C(s)+O2(g)→CO2(g) ΔH=−394kJ

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams

What volume would 2.25 moles of ne has occupy at stp?

If 16.00g of hydrogen gas reacts with 126.73g of oxygen, how many grams of water are yielded? (both reactants are completely consumed in the reaction.)