Th sum of the energy of a substance is the sum of the kinetic energies and potential energies of all the molecules in the substance

answer: gold foil experiment - he shot alpha particles at a gold foil

explanation:

the equation for synthesis of water is as follows;

here two moles of hydrogen are used with one mole of oxygen which gives one molecule of water as a product. but shana misinterpreted 2 moles as 2 grams in this equation.