1. How much energy is released when an ice cube tray containing 250 ml of water...

Question

Question

1. How much energy is released when an ice cube tray containing 250 ml of water freezes? The heat of fusion for water is 6.02 kJ/mol.

Answer 1

Answer #1

density of water is 1 g/mL

volume = 250 mL

mass of water = density * volume

= 1 g/mL * 250 mL

= 250 g

molar mass of water = 18 g/mol

so,

mol of water = mass / molar mass

= 250 g / 18 g/mol

= 13.89 mol

Q = Hfus*number of mol

= 6.02 KJ/mol * 13.89 mol

= 83.6 KJ

Answer: 83.6 KJ

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Answer 2

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