The elements lithium and oxygen react explo- sively to from lithium oxide (Li20) according
to the unbalanced equation below.
Li + 02 -+, Li2O.
How much lithium oxide will form if
3.88 mol of lithium react?
Answer in units of mol.

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.