CALCULATOR COLOR THEME
D) SPEAK OPTIONS
ZOOM
Do) 17. A compound containins 27.3 grams of carbon and 72.7 grams of oxygen. Which
of the following is a possible molecular formula?
D
CLE

The possible molecular formula will be

Explanation:

Mass of C= 27.3 g

Mass of O = 72.7 g

Step 1 : convert given masses into moles.

Moles of C =

Moles of O =

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C =

For O =

The ratio of C : O = 1: 2

Hence the empirical formula is

The possible molecular formula will be=

particle   p is an electron and particle q is a neutron