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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumsingle choice

Steam at 100°C is passed into a calorimeter of water equivalent 8 g containing 60 cc of water and 12 g of ice at 0°C until the temperature is 8°C. $L_{v} = 540, L_{f} = 80 cal / g$ . Find the mass of steam in g. Choose the correct value.

Options:

Answer:

Solution:

Absorbed: melting $12 (80) = 960 cal$ ; warming $(12 + 60 + 8) = 80 g$ by $8^{\circ} C = 640 cal$ ; total 1600 cal. Each gram of steam gives $540 + 92 = 632 cal$ . Mass $= 2.53 g$ . Option A.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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