What is the empirical formula of a compound based of the following percent composition information: 43.3% sodium, 11.3% carbon, and 45.4% oxygen?

(Na2CO3)x

Explanation:

Molar mass of Na = 23

Molar mass of C = 12

Molar mass of O = 16

Divide by the molar mass

Na C O

43.3/23 11.3/12 45.4/16

1.88 0.94 2.83

Divide all through by the smallest number 0.94

1.88/0.94 0.94/0.94 2.83/0.94

2 1 3

Na2CO3

(Na2CO3)x

c (diamond),

sio2 (quartz)

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