Question

How many kilojoules of heat are required to melt a 10-g popsicle is 0°C ? Assume the particle has the same molar mass and heat of fusion as water.

Answer 1

Answer;

3.4 kJ

Explanation;

Taking the mass of water as 10.0 g

Moles of water = Mass /molar mass

Moles of water in 10.0 g;

= 10g H2O x 1mol/18g

=0.56mol

But, 1 mole of water = 6.01 kJ

Hence;

6.01kJ/1mol H2O= x kJ/.56mol,

               x = 3.4kJ