What mass of liquid water can be heated from freezing to boiling with 42.6 kJ of energy, if the specific heat of water is 4.2 J g <sup>-1 </sup> <sup>o </sup>C <sup>-1 </sup>?

Md Ariful Islam

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Md Ariful Islam

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Freezing point of water = 0°C

Boiling point of water = 100°C

Cwater = 4.2 Jg-1°C-1

q = m × c × ∆T

m = q/∆T × c

= 42.6/(100-0) × 4.2

= 0.01g

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