How is Hess's law applied in calculating enthalpy? A. The first and last reactions in a path are added together.
B. The final equation in a path from reactants to products is used.
C. All the reactions in a path are added together.
D. Similar equations are substituted for unknown reactions.​

Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x. xx ml

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

What was bohr’s contribution to the planetary model