How Many KJ of Heat Are Needed to Completely Vaporize

question 68

Multiple Choice

How many kJ of heat are needed to completely vaporize 23.4 g of
O? The heat of vaporization for water at the boiling point is

• A)31.2
• B)52.8
• C)23.4
• D)2.26
• E)none of the above

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