Class XI The latent heat of vaporization (Lv)(Lv) is. the heat per unit mass required to change a substance from liquid to the vapor state at high pressure and low temperature the heat per unit mass required to change a substance from vapor to the liquid state without change in the temperature and pressure the heat per unit mass required to change a substance from liquid to the vapor state , at high temperature and low pressure the heat per unit mass required to change a substance from liquid to the vapor state without change in the temperature and pressure A 3.00-g copper penny at 25.0∘∘C drops from a height of 50.0 m to the ground. (a) If 60.0%% of the change in potential energy goes into increasing the internal energy, what is its final temperature? 21.8∘∘C 23.8∘∘C 25.8∘∘C 27.8∘∘C A 0.050 0-kg ingot of metal is heated to 200.0∘∘C and then dropped into a beaker containing 0.400 kg of water initially at 20.0∘∘C. If the final equilibrium temperature of the mixed system is 22.4∘∘C, find the specific heat of the metal. 4.83 J/kg∘∘C 4.63 J/kg. ∘∘C 4.73 J/kg. ∘∘C 4.53 J/kg. ∘∘C A 1.00-kg block of copper at 20.0∘∘C is dropped into a large vessel of liquid nitrogen at 77.3 K. How many kilograms of nitrogen boil away by the time the copper reaches 77.3 K? (The specific heat of copper is 0.092 0 cal/g . ∘∘C. The latent heat of vaporization of nitrogen is 48.0 cal/g.) 0.404 kg 0.434 kg 0.384 kg 0.414 kg Find the wrong statement about specific heat of a material Constant for a material is extensive property Has units as J/kg-K. Heat capacity per unit mass Do you really want to submit this quiz? Cancel Submit Quiz