Can someone give me a 5-6 sentence I need help!

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

How can a mixture of salt water be separated into salt and water

Pls i will do pls imma diewhat forms white light? (4 points)a. combination of all wavelengths of ultraviolet light b. combination of all wavelengths of visible lightc. absorption of electromagnetic waves d. absorption of infrared rays