4. The combustion of propane (C3H8) with O2 according to the given balanced chemical equation releases 531 kcal. How many kilocalories of energy are released when 0.750 mol of propane is burned?

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

If a solution contains 3 moles/liter of sodium chloride (nacl, made of sodium ions and chloride ions), what is the osmolarity of this solution