Final answer:
The heat required to melt 45g of ice at 0 degrees Celsius is 15,030 J.
Step-by-step explanation:
The heat required to melt 45g of ice at 0 degrees Celsius can be calculated using the formula Q = mLf, where Q is the heat, m is the mass, and Lf is the heat of fusion of ice. The heat of fusion of ice is usually given as 334 J/g. Therefore, the heat required to melt 45g of ice is:
Q = (mass)(heat of fusion)
Q = (45g)(334 J/g) = 15,030 J