It’s +21 (c) if i answered late my apologies
its 8 im positive i had the same question
Heat fusion is the amount of energy required to convert one mole of ice into water, 16650J is per 50g so if we divide 16650 by 50 we find it per gram: 16650/50 = 333J/g or 0.33KJ/g
hope that helps :)
PCs are usually more powerful devices w/ higher resolutions than the common graphing calculator.