How much heat (in joules) is used to heat a 96.86-gram sample of iron from 6.94 degrees Celcius to 100.00 degrees Celcius if the specific heat of Fe is 0.450 j/g*C? Record your answer to 2 decimal spaces.

A 32.92 gram sample of copper (specific heat, 0.385 J/g•°C) with an initial temperature of 108.1°C is added to a calorimeter containing 158.74 grams of water (specific heat, 4.184 J/g•°C) at 27.5°C. What is the final temperature of the metal? Report your answer with 3 significant figures.

What amount of heat, in J, is required to raise the temperature of 150.7 g of lead by 11.9°C? The specific heat of lead is 0.128 J/g°C. Give your answer in standard notation to 0 decimal places.

Suppose that 118 mL of water changes in temperature from 49.38°C to 33.12°C. What is qwater in kJ? (Assume that the density of water is 1.0 g/mL and that the heat capacity of water is 4.2 J/(g-°C). Report your answer to three decimal places and ignore significant figures.)