a compound containing carbon and hydrogen has a molar mass of 112.21 g/molg/mol and an empirical formula of ch2ch2 . part a determine its molecular formula. express your answer as a chemical formula.



Answer :

The chemical formula of a compound containing carbon and hydrogen has a molar mass of 112.21 g and an empirical formula of ch2 is  C8H16 or (CH2)8.

The use of chemical formula, numbers, and occasionally other symbols like parentheses, dashes, brackets, commas, and plus (+) and minus () signs to represent information about the chemical proportions of atoms that make up a specific chemical compound or molecule is known as a chemical formula.

In response to the query,

Carbon and hydrogen compounds have a molar mass of 112.21 gm/mole. Knowing that

Carbon's atomic weight is 12 grammes.

Hydrogen weighs one gramme of atoms.

That substance has the empirical formula CH2.

Therefore, the empirical formula  molecular weight is equal to 14 gm (12 gm + 2 gm).

Let's say the compound is (CH2)a.

The substance's molecular weight is (14a)gm/mole.

Here, we get

112.21 gm/mole times 14 a gramme

Or, a= 112.21/14

Or, a= 8.015 =~8

The chemical is therefore = (CH2)8 or C8H16

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