The heat of fusion for water is 80. cal/g. How many calories of heat are released when 20.0 g of water at 0°C is frozen to ice?

Question

The heat of fusion for water is 80. cal/g. How many calories of heat are released when 20.0 g of water at 0°C is frozen to ice?

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Xavia 3 years 2021-09-02T07:00:16+00:00 1 Answers 30 views 0

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  1. thugiang
    0
    2021-09-02T07:01:21+00:00
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    Answer:

    1600 cal

    Explanation:

    The formula

    q=mΔ_{fus}[tex]H^{0}[/tex]

    is used to calculate the heat required to melt a solid where q=amount of heat, m=mass and Δ_{fus}[tex]H^{0}[/tex] is the enthalphy of fusion

    now we substitute, m=20g, Δ_{fus}[tex]H^{0}[/tex]=80cal/g

    Therefore, q=20g x 80cal/g =1600 cal

    I hope you find this information useful and interesting! Good luck!

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