how does the the oxidation state of Cu change in this rreaction? (hint: Check out charges of the ion/ atoms of the product) Cu + O2 ---> CuO a Zero to + 3 b +1 to zero c zero to -2 d -1 to zero

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

Which states of matter have particles that move independently of one another with very little attraction?

Athe top of a hill, an athlete on a skateboard has x joules of mechanical energy. how much mechanical energy will she have at the bottom of the hill? ignore the effects of friction.