Question

The specific heat of a substance is 2.91 J/g·°C. If given 10.4 grams of the substance and if the temperature of the substance increases by 26 degrees Celsius, how much heat is absorbed?



a) 790 kJ

b) 7.9 x 102 kJ

c) 7.9 x 10−1 kJ

d) 0.79 J

Answer 1

use the formula, q=m*C*dT

Answer 2

I did and got 786.864, but I am not sure how I should convert that to get one of the provided answers

Answer 3

what units is your value in?

Answer 4

J because I didn't convert anything. I just did (2.91)(10.4)(26)=786.864

Answer 5

look at the values given, what units are they in?

Answer 6

kJ and one is in J so will I have to convert J to kJ

Answer 7

yep, do that and compare them

Answer 8

I got .786 Kj so would the answer be 7.9 x 10−1 kJ

Answer 9

yep, you got it.

Answer 10

Thanks so much!!

Answer 11

no problem, dude !