The amount of heat required to convert ice at -8∘∘C to water at 53∘∘C is 23 kJ. Calculate the mass (in g) of the ice that is converted to water. The specific heat capacity of liquid water is 4186 J kg-1 K-1, the latent heat of fusion of water is 3.34 ×× 105 J kg-1, and the specific heat capacity of
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The amount of heat required to convert ice at -8∘∘C to water at 53∘∘C is 23 kJ. Calculate the mass (in g) of the ice that is converted to water. The specific heat capacity of liquid water is 4186 J kg-1 K-1, the latent heat of fusion of water is 3.34 ×× 105 J kg-1, and the specific heat capacity of ice is 2100 J kg-1 K-1.
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- Ice at 00C is placed in a Styrofoam cup containing 0.32 kg of lemonade at 270C . The specific heat capacity of the lemonade is virtually the same as that of water, c = 4186 J/kg 0C. After the ice and lemonade reached the equilibrium temperature, some ice still remains. The latent heat of fusion for water is Lf = 3.35 x105 J/kg. Assume that the mass of the cup is so small that it absorbs a negligible amount of heat, and ignore any heat lost to the surroundings. Determine the mass of ice that has melted.Estimate the rate of change of temperature of the ocean in degrees/century associated with 4 W/m2 of net heat input assuming that the warming goes into a column of water 1 meter x 1 meter x 1000m.A mass m of steam at 130º C is used to warm 200 gm of water from 20º C to 50º C. Write an expression in terms of mass, m, for the heat lost by the steam as it cools to its boiling point. Write an expression in terms of mass, m, for the heat lost as the water condenses from the steam and then cools to the final equilibrium temperature of 50º C. Then calculate the amount of heat gained by the water, Q gained, raising its temperature from 20º C to 50º C and find the initial mass of the steam needed to complete this process as described.
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