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The mass of steam at 100째C is to be passedinto water of mass 100 g at 20째C to rise itstemperature by 5째C is |
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Answer» Let m be the amount of heat converted into water. If L is the latent heat capacity of steam, then Heat lost by steam = Heat gained by water (m * Latent heat of steam) + (m * Latent heat of water * dt) = (mass of water * specific heat capacity of water * change in temperature of water) mL + m * 1 * (100 – 20) = 100g * Latent heat of water (which is 1) * 5 540m + 80 m = 500 m * 620= 500 m = 500/620 = 0.81 g Hence, net mass of water = 100 + 0.81 = 100.81 g |
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