The mass % of C in methane (CH4) is?...Can any one help me????
Calculate the molecular mass of methane, which is approximately
12 + 4 =16 (i.e one C atom RAM=12 and 4 H atoms, RAM=1)
so the percentage of C by mass is
12*100%/16
Of course, I can help you with that! To calculate the mass percentage of carbon (C) in methane (CH4), you need to know the molar mass of carbon and the molar mass of methane.
Let's start by finding the molar mass of carbon (C). The molar mass is the mass of one mole of a substance and is expressed in grams per mole (g/mol). The atomic mass of carbon from the periodic table is approximately 12.01 g/mol.
Next, let's calculate the molar mass of methane (CH4). To do this, you need to sum up the atomic masses of the elements in the molecule. Carbon has an atomic mass of 12.01 g/mol, and hydrogen (H) has an atomic mass of approximately 1.01 g/mol. Since there are four hydrogen atoms in methane, the total molar mass of methane is:
Molar mass of methane (CH4) = (12.01 g/mol) + 4*(1.01 g/mol)
Now that we know the molar mass of carbon and methane, we can calculate the mass percentage of carbon in methane. The mass percentage is calculated by dividing the molar mass of carbon by the molar mass of methane and multiplying by 100.
Mass percentage of carbon in methane (CH4) = [(Molar mass of carbon / Molar mass of methane) * 100]
Substituting the values:
Mass percentage of carbon in methane (CH4) = [(12.01 g/mol / (12.01 g/mol + 4*(1.01 g/mol))) * 100]
Simplifying:
Mass percentage of carbon in methane (CH4) = [(12.01 g/mol / 16.05 g/mol) * 100]
Mass percentage of carbon in methane (CH4) = (0.7477) * 100
Mass percentage of carbon in methane (CH4) ≈ 74.77%
Therefore, the mass percentage of carbon in methane (CH4) is approximately 74.77%.