How much heat is required to convert 20.0 g of ice at 50.0⁰C to liquid water at 0.0⁰C? The specific heat of ice is 2.06 J/(g∙⁰C) and the heat of fusion of water is 334 J/g.

8740 joules are required to convert 20 grams of ice to liquid water.

Explanation:

The amount of heat required (), measured in joules, to convert ice at -50.0 ºC to liquid water at 0.0 ºC is the sum of sensible heat associated with ice and latent heat of fussion. That is:

(1)

Where:

- Mass, measured in grams.

- Specific heat of ice, measured in joules per gram-degree Celsius.

, - Temperature, measured in degrees Celsius.

- Latent heat of fussion, measured in joules per gram.

If we know that , , , and , then the amount of heat is:

8740 joules are required to convert 20 grams of ice to liquid water.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.