Question

# The Sahara desert with a very arid climate is one of the hottest regions in the...

The Sahara desert with a very arid climate is one of the hottest regions in the world. Its average temperature is above 30°C or 86°F. In a 24-hour period, the temperature can go from a day-time high of 99°F to a low of 35°F at night.

(a) By how many Celsius degrees does the temperature fall in the 24-hour period?
°C

(b) By how many Kelvin degrees does the temperature fall in the 24-hour period?
K

A glass beaker containing a sample of water is in a calorimeter. The beaker has a mass of 0.200 kg and the water has a mass of 1.15 kg. Both the beaker and water are at a temperature of 14.0°C. You drop a piece of steel with a mass of 0.395 kg at 225°C into it. After some time, the sizzling subsides and the system reaches an equilibrium temperature. (Make the reasonable assumptions that any steam produced condenses into liquid water during the process of equilibration and that the evaporation and condensation don't affect the final temperature.)

What is the final equilibrium temperature of the system (in °C)?