Heat of vaporization and Heat of Fusion Help please!!!!?

How much heat is required to boil 31.5g of water at its boiling point?

How much energy is released when 2.95kg of diethyl ether freezes? The heat of fusion for diethyl ether is 7.27kJ/mol.

I can’t figure these last two out, i’ve tried and tried but keep getting the wrong answer

convert the grams to moles. Then multiply by the respective heat of vaporization and heat of fusion


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