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# chemistry help?

1. What mass, in grams, of aluminum fins could 2666 J of energy heat from 15.53 ∘C to 27.68 ∘C ? Aluminum has a specific heat of 0.897 (J/g)⋅∘C.

2. What is the temperature change of the water if 206.5 g of water sat in the copper pipe, releasing 2666 J of energy to the pipe? The specific heat of water is 4.184 (J/g)⋅∘C.

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- Roger the MoleLv 79 months ago
Note the corrected placement of parentheses in the specific heats:

1.

(2666 J) / (0.897 J/(g⋅∘C)) / (27.68 ∘C - 15.53 ∘C) = 244.62 = 245 g Al

2.

(2666 J) / (4.184 J/(g⋅∘C)) / (206.5 g) = -3.086 ∘C change

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- 9 months ago
I think there is a formula for this

Read up molecular formulas and molar mass

- Roger the MoleLv 79 months agoReport
If you pay attention to the units you don't need a formula.

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