Question

An organic compound is made up of 0.72g of carbon, 0.16g of hydrogen and 0.32g of oxygen. Calculate the empirical formula of the compound

Answer 1

C3H8O

Step-by-step explanation:

First find the mole of each element present by dividing their mass by molar mass.

C = 0.72/14 = 0.05143

H = 0.16/1 = 0.16

O = 0.32/16 = 0.02

Then you divide by the smallest

C = 0.05143/0.02 = 3 approx.

H = 0.16/0.02 = 8

O = 0.02/0.02 = 1

Therefore the formula is C3H8O

Answer 2

look at the photo

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