Question

How many grams of water are frozen if 6,346 Joules of energy was given

off at 0 degrees Celsius?
1 point
19 g
26 g
43 g
3g

Answer 1

19g

Step-by-step explanation:

Given parameters;

Amount of energy = 6346J

Unknown:

Mass of water frozen = ?

Solution:

This is a phase change and a latent heat was involve;

H = mL

H is the quantity of heat

m is the mass

L is the latent heat of fusion of water = 335J/g

So;

6346 = mass x 335

Mass = 19g