What would be the percentage composition of carbon in 10g sample of methane is?
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I am sure this one has been answered recently.
calculate the molecular mass for methane (CH4) = 16
the percentage of C in 10 g of methane wil be the same as the percentage of C in the molecular mass so
12x100%/16
To find the percentage composition of carbon in a sample of methane, you need to know the molar mass of carbon, the molar mass of methane, and the amount of carbon present in the sample.
1. Obtain the molar mass of carbon (C). The atomic mass of carbon is approximately 12.01 g/mol.
2. Calculate the molar mass of methane (CH₄). In methane, there is one carbon atom and four hydrogen atoms. The atomic mass of hydrogen (H) is approximately 1.01 g/mol. Multiply the atomic mass of carbon by 1 (as there is only one carbon atom), and multiply the atomic mass of hydrogen by 4 (as there are four hydrogen atoms). Add these values together to find the molar mass of methane.
Molar mass(CH₄) = (1 * molar mass(C)) + (4 * molar mass(H))
3. Calculate the number of moles of carbon in the 10g sample of methane. Divide the mass of the sample by the molar mass of methane.
Moles of carbon = mass of sample / molar mass(CH₄)
4. Convert the number of moles of carbon to a percentage. Multiply the moles of carbon by 100, then divide by the total moles of methane (which is also the moles of carbon, since there is only one carbon atom in methane).
Percentage composition of carbon = (moles of carbon / moles of methane) * 100
By following these steps, you can determine the percentage composition of carbon in the 10g sample of methane.