Question

Which statement best relates an empirical formula with a molecular formula? (A) They are always different for the same compound. (B) Subscripts of empirical formulas can be reduced. (C) Molecular formulas can be determined from empirical formulas. (D) They both show the actual ratio of elements for a compound.

Answer 1

they are always different from same compound

Answer 2

To write the formula of a binary molecular compound, first use the prefixes in the name to tell you the subscript of each element in the formula. Then, write the correct symbols for the two elements with the appropriate subscripts.