Which expression gives the mass percent of carbon in methanoic (formic) acid, hcooh? 12/29 x 10012/46 x 1002/46 x 10016/46 x 100

The expression that gives the mass percent of carbon in HCOOH, is 12/46 x 100

Explanation:

Mass of carbon = 12 g/m

Mass of formic acid = 46 g/m

You pick the element's mass, and you divide between, the total mass.

When you do x100,  you have the percent.

(Mass of carbon / Total mass) . 100

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