You take an ice cube (mass = 18g) from the freezer (T=-10°C) and place it on the table. Later that day, you notice a puddle of water on the table that has reached ambient room temperature (20°C). How much heat must have been absorbed to make this happen?

Question

Remington Marshall

Chemistry

8 August, 09:52

You take an ice cube (mass = 18g) from the freezer (T=-10°C) and place it on the table. Later that day, you notice a puddle of water on the table that has reached ambient room temperature (20°C). How much heat must have been absorbed to make this happen?

+3

Answers (1)

Know the Answer?

Hope Porter · Answer 1

The equation to be used to calculate the heat absorbed when solid melts is the enthalpy of melting. It is represented as H = mCpT where H is the heat released after phase change, m is the mass of the substance, Cp is the specific heat capacity of the substance and T is the change in temperature.

H = mCpT

H = (18g/1000g/kg) (4.184kJ/kg-K) (293 - (-263))

H = 41.87kJ