Question

What mass of water at 100°C must be heated so as to form stream at 100°C when a burner supplies 45200 J of heat energy​

Answer 1

Solution:

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Here we have been asked to find out the mass of water at 100°C that must be heated so as to form steam at 100°C when a burner supplies 45200 J of heat energy.

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Some provided information in the question are:

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• m = ?
• L = 2260 Jg$^{–1}$
• Heat supplied by burner = 45200 J

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where, m = mass of water

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and L = specific heat of vaporisation of steam.

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We know that,

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Heat supplied by burner will be m × L

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$\implies$ 45200 = m × 2260

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$\implies$ m = 45200/2660 = 20 g

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Thus, mass of water at 100°C that must be heated so as to form stream at 100°C when a burnet supplies 45200 J of heat energy is 20 g.