What is the total number of joules released when a 5.00-gram sample of water changes from liquid to a solid at 0.0°C?

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Answer 1 · 2016-12-09T17:34:31

I found: #1700J#

here you have a change of phase from liquid to solid where we can evaluate the heat released #Q# (in Joules) using:

#Q=mL_s#

where:
#m=# mass;
#L_s=# latent heat of solidification of water that from literature is: #3.5xx10^5J/(kg)#

so for #5g=0.005kg# of water we get:

#Q=0.005*3.4xx10^5=1700J#