<h2>
Answer:</h2>
-310J
<h2>
Explanation:</h2>
The change in internal energy (ΔE) of a system is the sum of the heat (Q) and work (W) done on or by the system. i.e
ΔE = Q + W ----------------------(i)
If heat is released by the system, Q is negative. Else it is positive.
If work is done on the system, W is positive. Else it is negative.
<em>In this case, the system is the balloon and;</em>
Q = -0.659kJ = -695J [Q is negative because heat is removed from the system(balloon)]
W = +385J [W is positive because work is done on the system (balloon)]
<em>Substitute these values into equation (i) as follows;</em>
ΔE = -695 + 385
ΔE = -310J
Therefore, the change in internal energy is -310J
<em>PS: The negative value indicates that the system(balloon) has lost energy to its surrounding, thereby making the process exothermic.</em>
<em />
<em />
Answer:
if it is a true or false, the answer is true
Explanation:
Answer:
C. They must lose enough of their kinetic energy so that the attractions between them hold in place as they vibrate.
Explanation:
The "kinetic energy" refers to the energy of an object when it is moving. This is directly proportional to the object's "thermal energy." <em>If the kinetic energy of an object increases, </em><em>the thermal energy increases</em> and <em>if the kinetic energy decreases, </em><em>the object's thermal energy decreases</em><em> as well.</em>
Changing the phase of an object from liquid to solid means that the object will be subjected to low temperature. This means the thermal energy will decrease as well as the kinetic energy. This is known as "freezing." <u>The object needs to lose enough kinetic energy.</u> This results to its particles moving closer together in an attractive force.
So, this explains the answer.
The answer to the question asked above is that pressure varies with temperature. As the temperature rises pressure also rises.
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.
