What is the empirical formula of a compound that has 40% carbon, 6.7% hydrogen, and 53.3% oxygen?
Which compound?

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

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

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1