homework10373
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2. The water is then heated to its boiling point. Calculate the specific latent heat of
vaporisation if there was 330 g of water before the loo was added, and 813,600 J of
energy is supplied to boil all of the water once it has reached its boiling point.
Answer:

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skyluke89

Answer:

2465 J/g

Explanation:

The amount of energy required to boil a sample of water already at boiling point is given by

[tex]Q=m\lambda_v[/tex]

where

m is the mass of the water sample

[tex]\lambda_v[/tex] is the specific latent heat of vaporization of water

In this problem, we know

[tex]Q=813,600 J[/tex]

[tex]m = 330 g[/tex]

Solving the equation for [tex]\lambda_v[/tex], we find

[tex]\lambda_v = \frac{Q}{m}=\frac{813600}{330}=2465 J/g[/tex]

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