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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumnumerical

A calorimeter of water equivalent 8 g holds 60 g of water and 40 g of ice. Dry steam at 100°C is passed in until the temperature reaches $2 5^{\circ} C . L_{f} = 336 J / g, L_{v} = 2260 J / g, c_{w} = 4.2 J / (g^{\circ} C)$ . Find the mass of steam condensed, in g (two decimals).

Answer:

9.62

Solution:

Absorbed: melting $40 (336) = 13440 J$ ; warming 108 g by $2 5^{\circ} C = 11340 J$ ; total 24780 J. Each gram of steam gives $2260 + 4.2 (75) = 2575 J$ . Mass $= 9.62 g$ .

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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