Calculate ΔH for the following reaction: N2 + 3H2 → 2NH3. Average Bond Energies N≡N, 941 kJ/mol H–H, 432 kJ/mol N–H, 391 kJ/mol HOW DO WE GET THERE? What is the total energy required to break the reactant bonds (in both N2 and H2)? Total energy required = kJ

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

What three things determine the shape and size of a puddle when water is poured out onto a surface

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments