Question

How much heat energy is needed to raise the temperature of a 28 g sample of aluminum from 22.4°C to 87.1°C? Refer to Table 17-1 for the specific heat of aluminum.

http://www.webassign.net/dmwc1/17-1tab.gif

Answer 1

Ooh. What class is this - just asking.

Answer 2

honors chemistry

Answer 3

I think I see a similar question before.

Answer 4

yeah but it wasnt right

Answer 5

How do you know was not right? Do you have the result? Only for curiosity.

Answer 6

it only tells me its wrong

Answer 7

Honors Chemistry? Wow - no wonder. I am only in Physical Science, but some questions - like the one you asked before - seemed it was easy.

Answer 8

@kewlgeek555 thanks though you really helped

Answer 9

\[Q=28\cdot 0.897\cdot(64.7)=1625.1\approx1600\ J=1.6\ kJ\]

Answer 10

thats exactly what i did, it said I was wrong

Answer 11

Do you have the correct answer?

Answer 12

no...it sucks not having it

Answer 13

The answer is correct, for sure. May be they need the result in cal,
\[1625.1/4.18=388.75\approx390 cal\]

Answer 14

nope

Answer 15

want me to give you my login so you can try it on there

Answer 16

Man, no need. The table is incorrect.

Answer 17

how

Answer 18

Sorry, it is correct, I just see the other version in mol. The table is correct.

Answer 19

oh so how do i solve this

Answer 20

The equation is what I say to you. Something in the correction of the problem must be wrong.

Answer 21

oh ok

Answer 22

If you want I can check it with your login, do as you wish.

Answer 23

But I think the result will be the same.-

Answer 24

How much heat energy is needed to raise the temperature of a 50. g sample of aluminum from 21.1°C to 95.0°C? Refer to Table 17-1 for the specific heat of aluminum.


alluminum:0.897

Answer 25

its 33.1 right

Answer 26

It is ok now?