Answer:
[tex]E=2052.8 kJ[/tex]
Explanation:
The energy absorbed by the water is the energy it requires to evaporate. So:
[tex] Heat of .vap= 40.65 kJ/mol[/tex]
The moles of water:
[tex]n_w=m_w *\frac{1000g}{2.2lbs}*\frac{1}{M}[/tex]
M is the water molecular weight
[tex]n_w=2 lbs *\frac{1000g}{2.2lbs}*\frac{1}{18g/mol}[/tex]
[tex]n_w=50.5mol[/tex]
The energy absorbed:
[tex]E=n_w*Heat of vap.=50.5mol *40.65 kJ/mol[/tex]
[tex]E=2052.8 kJ[/tex]
