What is the relative formula mass of c2h5co2h

74

Explanation:

The compound is properly written as: C₂H₅CO₂H

To find the relative formula mass, we must know the atomic mass of the the atoms making up the compound first. The atomic mass is given by the periodic table:

                           C = 12g

                            H = 1g

                            O = 16g

Now use the number of each atom present in the compound to multiply the atomic mass and add up:

C₂H₅CO₂H = (2x12) + (5x1) + (1x12) + (2x16) + (1x1) = 24+5+12+32+1 = 74

It has no unit