# Chemistry

The amount of heat required to raise 200 g of aluminum by 10 degrees celsius if its specific heat is 0.897 J/gC ?
I need help. This is all confusing.

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1. Just look at the units:

Joules = Joules/gram deg C * grams * deg C

grams cancel
deg C cancels
left with Joules

= .897 * 200 * 10 Joules

= 1794 Joules

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2. m=200 g
c=0.897 J/g°C
ΔT=10°C
Calculate heat required, ΔQ using

ΔQ=mcΔT

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3. Oh, okay. You multiply the numbers. I was dividing it for some reason. Thank you, you are a lifesaver.

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4. As Damon said, check the units.
If you divide, the units do not give joules.

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5. You are welcome :)

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