Answer: The amount of heat required is 5 Calories.
Step-by-step explanation:
To calculate the amount of heat absorbed, we use the equation:

where,
q = amount of heat absorbed = ?
m = mass of ice = 100 g
= specific heat capacity of ice =

= change in temperature =

Putting all the values in above equation, we get:

Hence, the amount of heat required is 5 Calories.