Calculate the molecular mass of sucrose(C12H22O11) molecule?

Which of the following is an empirical formula?

Water is a/an ___

What are the multiples for the prefixes yocto, atto respectively?

12.044 x 1023 atoms of oxygen contains ___

Candela is the S.I. unit of _____

Law of Definite Composition is also known as ____

Calculate the mass percent of magnesium in the formation of magnesium oxide.