# Homework Help: Calories Required to Raise the Temp of Aluminum

1. Aug 30, 2014

### Staff: Mentor

1. The problem statement, all variables and given/known data

How many calories are required to raise the temperature of 26 grams of aluminum from 20°C to 115°C?

2. Relevant equations

Specific heat of aluminum is 0.22 cal / g x °C

Amount of heat = SH x mass x (T2-T1)

3. The attempt at a solution

Plugging numbers into the 2nd equation gives me:

cal = 0.22 x 26 x 95
cal = 543.4

So I get 543.4 calories as the answer, or 5.4 x 102 calories. However, my workbook only has the following as possible answers:

5.4 x 10+1
5.4 x 10-1
5.4 x 10+3
5.4 x 10-3

Have I missed something here, or is my workbook wrong?

2. Aug 30, 2014

### Staff: Mentor

I'm no expert in this, but your numbers look okay to me.

3. Aug 31, 2014

### Staff: Mentor

I agree with your answer, Drakkith. It seems to me that your workbook has a typo, unless you copied some of the information incorrectly.

4. Aug 31, 2014

### Staff: Mentor

Nope, that's exactly what it says.
Thanks guys.

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