How much energy must be added to 2 mol H2 O ( g) to decompose Into H2 and O2

The rules of engagement (roe) working group is often used to (select all that apply.)

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.