How many calories are required to raise the temperature of 75g of water from 20 ˚C to 50˚ C?

A. 1.5x103 cal

B. 2250 cal

C. 2000 cal

D. 75.0 cal

How can you use chemical equations to predict the products of the reaction you can carry out?

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.