Saturday

December 20, 2014

December 20, 2014

Posted by **anonymous** on Thursday, March 1, 2012 at 6:33pm.

of ice at −6 C to melt it and raise the temperature of the water to 61 C? The specific heat of ice is 0.49 kcal/kg · K and of water is 1 kcal/kg · K; the heat of fusion of water is 79.7 kcal/kg, and its heat of vaporization is 418 kcal/kg.

Answer in units of kcal

- chemistry -
**DrBob222**, Thursday, March 1, 2012 at 9:46pmUse two formulas.

Within a phase:

q=mass x specific heat x (Tfinal-Tinitial)

phase change:

mass x heat vap at boiling point

mass x heat fusion at melting point

For example:

at melting point of ice. To change solid ice at zero C to liquid at zero C.

q = 59 g ice x heat fusion - 59 x 80 cal/g = ?

From ice at zero to water 100 C

q = mass x specific heat x(Tfinal-Tinitial) = 59 g x 1 cal/g x (100-0) = ?

Then add all of the q amount to obtain total q the divide by 1000 to convert to Kcal.

**Answer this Question**

**Related Questions**

physics - A 40-g block of ice is cooled to −71°C and is then added to 590...

physics - A 40-g block of ice is cooled to −71°C and is then added to 590 ...

chemistry - The specific heat of ice is 0.5 calories/gram. 60 grams of ice will ...

Physics- - -Steam at 100 ¡ãC is mixed with 166.4 g of ice at ¨C32.8 ¡ãC, in a ...

Physics!!!Please Help! - -Steam at 100 ¡ãC is mixed with 166.4 g of ice at ¨C32....

math - If i place a dish of ice outside in the sun, The ice has a mass of 0.59 ...

math - Problem The latent heat of fusion (solid become liquid) for ice is 79.8 ...

Chemistry HEAT OF FUSION - What amount of energy is required to melt a 26.9 g ...

Chemistry - What amount of energy is required to melt a 27.4 g piece of ice at ...

Physics - (a) How much heat in kcal must be provided for a 0.853 kg block of ...