This would depend on the isotopes of carbon and oxygen. Assuming that the most common isotopes are in play, use the Atomic Mass of each to get
2x (1) hydrogen +
2x (12.01) carbon +
2x (15.99) oxygen = roughly 58
(2x carbon)/58 = roughly 24/58
multiply (24/58) by 100 to get a percentage
=41.379=41.38%
The percentage of carbon is 71,58 %.
84.09
Carbon has a atomic mass of 12.So its percentage is 75%
The molecular mass of CO is 28. The carbon percentage by mass is ~43%. Hence the oxygen percentage by mass is ~57%.
Molecular weight of CO2 is about 44g (12g Carbon + 32g Oxygen *2 atoms Oxygen). So that means if you are presented with 44g CO2, that means there's 12g Carbon.
The percentage of carbon is 71,58 %.
57678
84.09
Carbon has a atomic mass of 12.So its percentage is 75%
The properly written formula, SiC, shows that the substance contains equal numbers of silicon and carbon atoms. Therefore, the atomic percentage of carbon is 50 %. The question may have been intended to ask for mass percentage. The gram atomic mass of silicon is 28.0855 and the gram atomic mas of carbon is 12.011. Therefore, the mass percentage of carbon is 100[12.011/(12.011 + 28.0855)] or about 29.956, to the justified number of significant digits.
The molecular mass of CO is 28. The carbon percentage by mass is ~43%. Hence the oxygen percentage by mass is ~57%.
The percentage of carbon in glucose is 40 %.
Among well-characterized compounds, lithium carbide probably contains the highest percentage of carbon by mass. However, it might well be possible to make a compound with more carbon by inducing one substitution on graphene or one of the other multi-atomic forms of carbon.
Methane is composed of only carbon (C) and hydrogen (H). It has the formula of CH4. Total molar mass = 12 + 4 = 16.Mass % Carbon = 12/16 (x100%) = 75% Mass % Hydrogen = 4/16 (x100%) = 25%
Molecular weight of CO2 is about 44g (12g Carbon + 32g Oxygen *2 atoms Oxygen). So that means if you are presented with 44g CO2, that means there's 12g Carbon.
Percentage of hydrogen in methane is 25%. Percentage of hydrogen = mass of hydrogen/mass of methane x 100 mass of hydrogen = 1 x 4= 4 and mass of carbon = 12. Since methane has 4 hydrogen atoms and one carbon atom therefore mass of methane = 16 Percentage of hydrogen = 4/16 x 100 =25
slightly more than 14, carbon 12 has an atomic mass of 12 by definition, so 1 atomic mass = the sum of the mass of a proton neutron and electron divided by 2 neutrons are slightly heavier than the combined mass of an electron and proton carbon 14 has a higher percentage neutrons than carbon 12 so it is heavier relative to the number of particles in it's nucleus(14)