How do you balance this equation using half-reactions? Is there a need to use half-reactions at all? How can you tell? CuF2+NH3--> Cu3N+NH4F+N2

Explain that newton first law,second law and third law of motion?

Exit what is the density of an object having a mass of 5.0 g and a volume of 45.0 cm3?

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