How many grams of ice at -9.1 ∘C can be completely converted to liquid at 16.4°C if the available heat for this process is 5.69×103 kJ?
For ice, use a specific heat of 2.01 J/ (g°C) and ΔHfus = 6.01 kJ/ mol .
Express your answer to three significant figures and include the appropriate units.
Heat, q, is energy transferred between a system and its surroundings. For a process that involves a temperature change
q = m Cs ΔT
where Cs is specific heat and mm is mass.
Heat can also be transferred at a constant temperature when there is a change in state. For a process that involves a phase change
q = n ⋅ ΔH
where, nn is the number of moles and ΔH is the enthalpy of fusion, vaporization, or sublimation.
The following table provides the specific heat and enthalpy changes for water and ice.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Heating and Cooling Curves concept. You can view video lessons to learn Heating and Cooling Curves. Or if you need more Heating and Cooling Curves practice, you can also practice Heating and Cooling Curves practice problems.