Answer:
the change in the system internal energy is 20 J
Explanation:
The computation of the change in the system internal energy is as follows:
Since the volume remains constant so the work done would be zero
Now the change in the internal energy is
= Heat given to system - work done
= 20 J - 0
= 20 J
hence, the change in the system internal energy is 20 J
The same is to be considered
THE ANSWER IS: <u>737.5</u>
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When NaCl is added to water, it dissolves into ions, Na+ and Cl-, since NaCl is a salt and a strong electrolyte. The resulting solution will have a neutral pH since NaCl is a neutral salt.
When HCl is added to water, it dissolved into ions as well, H+ and Cl-, since HCl is also a strong electrolyte. The resulting solution will have a pH of less than 7 since the H+ ions will increase the acidity of water.
Answer:
When combined with Hubble's visible-light data, astronomers can ... Dark things absorb light, but this invisible stuff neither absorbs, nor ... Is dark matter made of still undiscovered tiny particles, as most physicists suppose?
Explanation: