Question

Use the table on the right to calculate each required quantity.

The quantity of heat required to melt 175.0 g Cu: ____ kJ

The mass of a sample of NaCl that requires 450.1 kJ of heat to melt fully: ____ g

The identity of a substance that releases 21.2 kJ of energy when 1.42 mol freezes: ____

Answer 1

a. 35.8 KJ

b. 871 g

c. Fe

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