Please answer in 4 or more sentences

In which situation can a mixture always be called a solution

What is the compound name for the formula [ru(en)2cl2]2+ and [co(en)cl2br]-

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?