A 2.0 kg block of aluminium (specific heat capacity = 900 J kg⁻¹ °C⁻¹) is heated from 25 °C to 85 °C. What is the thermal energy absorbed by the block?

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Question

A 2.0 kg block of aluminium (specific heat capacity = 900 J kg⁻¹ °C⁻¹) is heated from 25 °C to 85 °C. What is the thermal energy absorbed by the block?

Accepted Answer

108 000 J — Using Q = mcΔT: ΔT = 85 − 25 = 60 °C; Q = 2.0 × 900 × 60 = 108 000 J. Option B results from using only half the mass (1.0 kg). Option C omits the ΔT factor entirely and calculates only m × c / 1000. Option D uses the wrong temperature difference of 50 °C instead of 60 °C.

Answer

54 000 J

Answer

108 000 J

Answer

1800 J

Answer

45 000 J

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