How much energy is required to change a 20-g ice cube from ice at  −40°C to steam at 105°C? In MJ

A 50.0 g copper calorimeter contains 290 g of water at 20.0°C. How much steam must be condensed into the water if the final temperature of the system is to reach 40.0°C?

A jet of steam at 100°C is applied to a 2.00 kg block of ice at 0°C. How many grams of steam would be required to completely melt the ice assuming a complete transfer of thermal energy? nA d bloow olle boutaig erd 15000 lo yolla an ai e W lobin bna 1900 lo yolla ns e losbinom 4

The "steam" above a freshly made cup of instant coffee is really water vapor droplets condensing after evaporating from the hot coffee. What is the final temperature of 205 g of hot coffee initially at 98.0°C if 3.18 g evaporates from it? The coffee is in a Styrofoam cup, and so other methods of heat transfer can be neglected. Assume that coffee has the same physical properties as water; its latent heat of vaporization is 539 kcal/kg and its specific heat is 1.00 kcal/(kg · °C).

How much energy is required to change a 43.0-g ice cube from ice at -9.0°C to steam at 113°C?

How much energy is required to change a 43.0-g ice cube from ice at -6.0°C to steam at 111°C?

How much energy is required to change a 30-g ice cube from ice at  −25°C  to steam at 115°C?  ?MJ

A student measures the following data in a calorimetry experiment designed to determine the specific heat of aluminum. (Do not assume atmospheric pressure.) Initial temperature of water and calorimeter:         70°C Mass of water: 0.400 kg Mass of calorimeter: 0.040 kg Specific heat of calorimeter: 0.63 kJ/kg · °C Initial temperature of aluminum: 26.6°C Mass of aluminum: 0.200 kg Final temperature of mixture: 65.8°C Use these data to determine the specific heat of aluminum.