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What is the molecular formula of the compound?Express your answer as a chemical formula.

What Is The Molecular Formula Of The CompoundExpress Your Answer As A Chemical Formula class=

Sagot :

Answer:

[tex]C_2H_4[/tex]

Explanation:

Here, we want to get the chemical formula for the compound

From what we have, the compound contains hydrogen and carbon only

We also were given that the molar mass is 28.06 amu

Now,we beed to get the individual atomic mass of carbon and hydrogen

From records, carbon has an AMU of 12.01

The AMU of hydrogen is 1.00794

Looking at the total value, we can see that the max possible number of atoms of carbon present is 2

Now, we need to know the number of hydrogen atoms

Let us call this n

Mathematically, we know that the AMU of the compound is the sum of the AMU of the individual atoms

Hence, we have it that:

[tex]\begin{gathered} 28.06\text{ = 2(12.01) + n(1.00794)} \\ 1.00794n\text{ = 28.06 - 24.02} \\ 1.00794n\text{ = 4.04} \\ \\ n\text{ = }\frac{4.04}{1.00794} \\ \\ n\text{ = 4} \end{gathered}[/tex]

Finally, we want to write the molecular formula of the compound

The molecular formula is written with carbon first, followed by its number of atoms as subscript, then hydrogen , with its number of atoms as subscript

We have this written as:

[tex]C_2H_4[/tex]