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I'm doing some heat problems from 4A. I've noticed that to calculate q, sometimes you do q = mass x specific heat capacity x delta T. Other times, it's just q = specific heat capacity x delta T. When do you know to multiply mass or not?
I think that what you're getting mixed up is heat capacity (symbol is capital "C") and specific heat capacity (in high school for me it was "c" but Prof Lavelle and the book are using Cs). C = Cs*m and q = C*ΔT, so when you plug Cs*m into q = C*ΔT, you get q = Cs*m*ΔT
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