Why does ice get colder when you melt it?

Asolution has a ca2+ concentration of 0.049 m and an f- concentration is 0.147 m at equilibrium. the value of ksp for caf2 at 25°c is 4.0 x 10-11. will this solution form a precipitate? yes no

1. list three scientific reasons cockroaches may fly.

If 90.0 grams of ethane reacted with excess chlorine, how many grams of dicarbon hexachloride would form