I'm pretty sure its metals.
34 is the answer i htink sorry if its wrong
When a neutral hydrogen atom loses an electron, a positively-charged particle should remain.
Answer:
d. The energy required to evaporate 1 kg of liquid water equals the energy released when 1 kg of water vapor condenses into liquid.
Explanation:
Hello,
Since we're considering the same amount of water, the vapor phase has a higher energy content than the liquid phase, thus, for the specified amount of water particles (those contained in the given 1 kg) the energy MUST be same when taking them either to a gaseous phase or to a liquid phase, the only difference is the sign which is negative from gaseous to liquid (heat withdrawal) and positive from liquid to gaseous (heat adding).
Best regards.
TO be saturated you need an amount of solvent that will not dissolve anymore into the solution. So, the best answer from the list is C