The temperature of the air, pavement, and the type of ice-melt compound used will affect the rate at which the ice melts. There are many different ice-melt compounds available from traditional rock salt (sodium chloride) to ice-melt pellets (calcium chloride).
Idk but look it up on google
Look at the liter man it’s a great way to learn how much every liquid measurement is
I believe the compound is Phosphorus pentoxide