Determine how much energy is needed to change 50 g of liquid water at 100°C to steam. 13,000J 113,000J

Question

Determine how much energy is needed to change 50 g of liquid water at 100°C to steam.

13,000J

113,000J

-113,000J

-130J

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Helga 6 months 2021-08-04T12:09:16+00:00 1 Answers 3 views 0

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    2021-08-04T12:10:16+00:00

    Answer:

    Q=113,000J

    Explanation:

    Hello there!

    In this case, since the vaporization process is carried out in order to turn a liquid into a gas due to the addition of heat, we can use the following heat equation involving the heat of vaporization of water or any other substance:

    Q=m*\Delta _{vap}H

    Thus, since this heat of vaporization for water is 2259.36 J/g, we plug in this amount to obtain the total energy for this process.

    Q=50*2259.36 J/g\\\\Q=113,000J

    Which is positive due to the necessity of heat.

    Regards!

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