Why is a water bath used to evaporate the water from the copper sulphate solution instead of heating the evaporating basin directly with a Bunsen burner?

Matches the chemical name of each oxide of phosphorus to its chemical formula

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

If i initially have a gas at a pressure of 12 atm, a volume of 23 liters, and a temperature of 200 k, and then i raise the pressure to 14 atm and increase the temperature to 300 k, what is the new volume of the gas?