1. Calculate the amount of heat required for 25.0 grams of water to change from 10 degrees Celsius to 30 degrees Celsius. *
2 points
2090
2 points
2.50.0 grams of water at 100 degrees Celsius evaporated to water vapor
at 100 degrees Celsius. Calculate the amount of heat required for this
conversion.
113000
3. A student measured 15.0 grams of ice in a beaker. The beaker was then 2 points
placed on a hot plate where it was heated uniformly for a certain amount
of time. During the melting process of the ice, the student noted that the
temperature was at 0 degree Celsius. When all the ice converted to water,
the final temperature was also at 0 degree Celsius. How much heat was
used to melt the ice? *
Your answer
4. If 5.0 grams of water was cooled from 50 degrees Celsius to 40
degrees Celsius, then calculate the amount of heat released by the water.
2 points
209
5. A certain amount of water used exactly 84.0 Joules of heat energy to
change from 25.0 degrees Celsius to 35 degrees Celsius. How many
grams of water was used?
2 points
No