(a) How much energy is required to change a 52.0 g ice cube from ice at - 8.0°C to water at 42°C?

It is difficult to extinguish a fire on a crude oil tanker, because each liter of crude oil releases a large amount of energy, 2.80 × 107 J, when burned. To illustrate this difficulty, calculate the number of liters of water that must be expended to absorb the energy released by burning 0.95 L of crude oil, if the water has its temperature raised from 20.0°C to 100°C, it boils, and the resulting steam is raised to 300°C. The latent heat of vaporization for water is Ly 2256 kJ/kg, and in this problem, take 1520 J/kg.°C as the specific heat of steam. V =

2.00 kg of water has a volume of 2.00 x 10-3m3 when in the liquid state at 100 °C. When the water is completely changed from liquid to vapour at 100 °C, under a constant atmospheric pressure of1.01 x 105 Pa, the volume increases to 3.38 m3. (i) How much work is done against the atmosphere as the water changes into vapour?(ii) What is the change in the internal energy of the water during vaporization?

Lake Erie contains roughly 4.00 x 10¹1 m³ of water. (a) How much energy is required to raise the temperature of that volume of water from 14.2°C to 21.2°C? (Assume the density of this water to be equal to that of water at 20°C and 1 atm.) J (b) How many years would it take to supply this amount of energy by using the 1,400-MW exhaust energy of an electric power plant? yr

How much energy does a refrigerator remove from 120.0 g of water at 32.0 °C to make ice at -11.5°C ?

A small chunk of dry ice (solid carbon dioxide) at 195 K is added to a thermally insulatedcontainer filled with liquid nitrogen at its boiling point of 77 K. What happens in thecontainer?(A) The dry ice melts until thermal equilibrium is established.(B) Some of the liquid nitrogen boils and the dry ice gets colder.(C) Some of the liquid nitrogen freezes and the chunk of dry ice gets larger.(D) An equilibrium temperature is reached without any phase changes occurring.