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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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?

Physics
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\[Q=mc(T_f-T_i)\] Q = (0.045 kg)(390 J/kg°C)(60.0° C - 20°C)
I agree with @peachpi
just 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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