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6 July, 10:06

How many joules of heat are needed to raise the temperature of 1.5 g of aluminum at 45°C, if the specific heat of aluminum is 0.75 J/g°C? Group of answer choices

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  1. 6 July, 13:37
    0
    50.6 J

    Explanation:

    We have to use the formula

    H = mcθ

    Where

    H = quantity of heat absorbed in joules

    m = mass of aluminum = 1.5g

    c = specific heat capacity of aluminum = 0.75 J/g°C

    θ = rise in temperature of aluminum = 45°C

    Substituting into H = mcθ

    We have;

    H = 1.5g * 0.75 J/g°C * 45°C

    H = 50.6 J
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