Plz any body be my gf plz plz or talk with me plz

Draw two cyclic constitutional isomers of cis-1

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.

Heat is the total potential energy of a substance that can be transferred. true false