Question

Calculate the energy needed to change 200.0 g of ice from -20.0 º C to water at 35.0 ºC.

Answer 1

I do feel that I remember that 1 Joule of energy raises 1 gram of water by 1 degree C. You may want to double-check that, but can you see how you might approach the answer given that information?

Answer 2

So it would take 200 J to raise the 200g 1 degree? & I need to raise it 55degrees so would it take 1.1 * 10^4 J?

Answer 3

But my answer needs to be in kcal

Answer 4

my mistake, 1 calorie is the energy required to raise 1 gram of water by one degree celsius

Answer 5

So it would be 1.1 * 10^4 cal? Making it 11 kcal?

Answer 6

exactly :)

Answer 7

Okay, thank you!