CARBON
Question:
Which of the following has the largest percent by mass of carbon?
a. C a C O ₂
b. C O ₂
c. N a H C O ₃
d. C H ₄
The answer is D! C H ₄ or the Methane Gas
Carbon content of the methane gas is 75 percent.
Hydrogen has an atomic mass of 1 atomic mass unit, so that's 4 in Methane. And 1 atom of Carbon, that's 12 atomic mass unit.
Molecular mass of Methane is 16 atomic mass unit.
Therefore, percent carbon is (12/16) x 100 percent is equal to 75%
- Carbon is a chemical element in the p e r i o d i c table of elements with a symbol C that belongs to the group 14 of the p e r i o d i c elements, also known as the carbon group. Its name, carbon was derived from a Latin word "carbo" means coal. This element has an atomic number of 6 and an atomic mass of 12 atomic mass unit.
In fact, carbon is everywhere. You're technically made up of of carbon, so is clothes , plastics and your household furniture and equipment machines. Diamonds and graphite are also made of carbon. Carbon (coal - which is the main use of carbon) is used as a fuel. Graphite is used for pencil tips, high temperature crucibles, dry cells, electrodes and as a lubricant. Diamonds - pressurized carbon are used in jewelry and – because they are so hard – in industry for polishing cutting, drilling, and grinding - only a diamond can cut a diamond. Some of the most common compounds that has the most carbon are: carbon dioxide (CO₂), carbon monoxide (CO), carbon disulfide (CS₂), chloroform (CHCl₃), carbon tetrachloride (CCl₄), methane (CH₄), ethylene (C₂H₄), acetylene (C₂H₂), benzene (C₆H₆), ethyl alcohol (C₂H₅OH) and acetic acid (CH₃COOH).
