How many carbon atoms are there in a diamond (pure carbon) with a mass of 55 mg ?

If 2 molecules of one reactant combine with 3 molecules of another to produce 5 molecules of a product, then what is the representation of the reaction?

The poh of a solution is 6.0. which statement is correct? use poh=-log[oh and ph+poh= 14 o o o the ph of the solution is 20.0. the concentration of oh ions is 1.0 x 10-8 m- the concentration of oh ions is 1.0 x 106 m- the ph of the solution is 8.0.

Why must pencil be used to draw on paper in paper chromatography