Why on earth is the sky blue?!?!?

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

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?

What are the two basic types of satellites