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Specific Heat Capacity

What will the...

Question

What will the amount of heat required to convert 50g of ice at $0^{0}$ C to water at $0^{0}$ C

400 cal

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4000 cal

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3000 cal

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300 cal

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Solution

The correct option is B 4000 cal
$Q = m L_{f}$
$Q ⟶$ Heat given
$m ⟶= 50 g$
$L_{f} ⟶$ Latent heat of fusion of ice $= 80 c a l / g$
$∴ Q = 50 \times 80 = 4000 c a l$

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