Question

Given 1.01 g of H2 in the reaction H2 + 1/2 O2 = H2O. The Delta H for solution is 143 kJ. What is the delta H for the reaction?

Answer 1

I'm confused by the term "solution". If the standard rxn dH is 143 kJ/mol it is done this way:
dHrxn = 143 kJ x (1.01/molar mass H2) = ?