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mtimko
 one year ago
A block of copper (c = 390 J/kg°C) is heated from 20.0 C to 60.0 C. How much heat (in J) is absorbed by the copper if its mass is 45.0 g?
mtimko
 one year ago
A block of copper (c = 390 J/kg°C) is heated from 20.0 C to 60.0 C. How much heat (in J) is absorbed by the copper if its mass is 45.0 g?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[Q=mc(T_fT_i)\] Q = (0.045 kg)(390 J/kg°C)(60.0° C  20°C)

arindameducationusc
 one year ago
Best ResponseYou've already chosen the best response.0I agree with @peachpi

whpalmer4
 one year ago
Best ResponseYou've already chosen the best response.0just a slight quibble: \[Q = (0.045\text{ kg})(390\frac{\text{ J}}{\text{kg }^\circ\text{C}})(60.0\ ^\circ\text{C}  20.0\ ^\circ \text{C)}\] Don't want to lose those significant figures or mangle the units!
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