The label on a bottle shows the following information: c2h4o, molar mass 44.06 grams per mole. the formula must be:
a. the empirical formula only
b. the molecular formula only
c. the empirical formula and the molecular formula
d. neither the empirical formula nor the molecular formula

c. the empirical formula and the molecular formula

Explanation:

Atomic mass of C = 12 amu

Atomic mass of H = 1.0 amu

Atomic mass of O = 16 amu

Molar mass of C₂H₄O = (12 x 2) + (1 x 4) + (16 x 1) = 44 g/mol

Molar mass is given by the summation of the atomic mass of the individual atoms.

We calculate the molecular mass or molar mass from the molar formula. therefore C₂H₄O is the molecular formula.  

Also empirical formula is the simplest ratio of the atoms in a molecule. For every 1 O atom there are 2 C atoms and 4 H atoms. So this is the simplest ratio of atoms in the molecule. Therefore, C₂H₄O is also the empirical formula.  

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons