How much energy is lost when 80.0 grams of water changes temperature from 100. C to 45.0 ?

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

Name the element in group 17, period 2. (periodic table)

In france, grapes are 1.95 euros per kilogram. what is the cost of grapes, in dollars per pound, if the exchange rate is 1.14 dollars/euro? (2.6)