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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