# Chemistry

How much heat energy, in kilojoules, is required to convert 63.0g of ice at −18.0 ∘C to water at 25.0 ∘C ?

1. 👍 0
2. 👎 0
3. 👁 301
1. You work this in stages.
Within a phase it is
q = mass x specific heat x (Tfinal-Tinitial). For example, for liquid water at zero C to boiling it will be
q = mass H2O x specific heat liquid H2O x (100-0).
Then at a phase change (from ice to liquid or from liquid to gas it is
q = mass x heat fusion (for solid) or heat vaporization (for liquid to gas).
Then add the parts to find the total.

1. 👍 0
2. 👎 0
2. 234

1. 👍 0
2. 👎 0
posted by qwefc

## Similar Questions

1. ### Chemistry

How much heat energy, in kilojoules, is required to convert 53.0 g of ice at -18.C to water at 25.0 C ?

asked by Morgan on December 9, 2011
2. ### chemistry

How much heat energy, in kilojoules, is required to convert 37.0g of ice at −18.0 ∘C to water at 25.0 ∘C ?

asked by liz on May 9, 2015
3. ### Chemistry

How much heat energy, in kilojoules, is required to convert 36.0g of ice at 18.0C to water at 25.0C

asked by Ashley on January 30, 2013
4. ### Chemistry

How much heat energy, in kilojoules, is required to convert 48.0g of ice at −18.0 ∘C to water at 25.0 ∘C ? Please show all steps. i don't know where to start

asked by Anna on December 9, 2014
5. ### Chem

How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)

asked by just need set up on April 4, 2013
6. ### Chemistry

How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)

asked by Cody on April 3, 2013
7. ### Chemistry

How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)

asked by B on April 4, 2013
8. ### Chem

How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)

asked by greg on April 4, 2013
9. ### chem

The heat of combustion of bituminous coal is 2.50 × 104 J/g. What quantity of the coal is required to produce the energy to convert 137.7 pounds of ice at 0.00°C to steam at 100.°C? specific heat (ice) = 2.10 J/g°C specific

asked by Bogdanam on December 15, 2010
10. ### Physics

Assume the optimal coffee drinking temperature is 75°C, and further assume coffee has the same heat capacity and density as water. a. How much energy is required to raise the temperature of 1 cup (0.237 liters) of coffee

asked by Steve on December 5, 2010

More Similar Questions