The density will always be the same.
I'm pretty sure the answer is A. 0.5. Sorry if i'm wrong.
Answer:
Generally, a solute dissolves faster in a warmer solvent than it does in a cooler solvent because particles have more energy of movement. For example, if you add the same amount of sugar to a cup of hot tea and a cup of iced tea, the sugar will dissolve faster in the hot tea.
The answer I'm pretty sure is 3