<u>Answer:</u>
<em>The amount of energy needed when water at 72 degrees c freezes completely at 0 degrees c is
Joules</em>
<em></em>
<u>Explanation:</u>

where
= Final T - Initial T

=30125J
Q is the heat energy in Joules
c is the specific heat capacity (for water 1.0 cal/(g℃)) or 4.184 J/(g℃)
m is the mass of water
mass of water is assumed as 100 g (since not mentioned)
is the heat energy required for the phase change
=mass × heat of fusion

Total heat =
Total Heat = 30123J + 33600J
= 63725 J
=
Joules is the answer
C is correct.
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B. Carbon dioxide bexause it is 96.5%
There are 2 possible answers here : b and d.
The Ideal Gas Equation is : <u>PV = nRT</u>
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Here, when pressure is increased and temperature is lowered, the volume of the molecules will substantially decrease, which means it has deviated from ideal behavior.