ussing the graduted cylinders below find the volume of the object. calculate the density of the mass is 78.42g

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as

What type of electromagnetic waves does the human eye see as the colors red blue or green a visible light waves b radio waves c infrared waves d microwaves