The atomic mass number of an atom does not directly provide information about the number of carbon atoms in it. The atomic mass number, also known as the mass number, represents the total number of protons and neutrons in the nucleus of an atom.
Carbon itself has an atomic number of 6, which means it has 6 protons in its nucleus. However, the number of neutrons can vary, resulting in different isotopes of carbon. The most common isotope is carbon-12, which has 6 neutrons, but there are also carbon-13 and carbon-14 isotopes with 7 and 8 neutrons, respectively.
To determine the number of carbon atoms in a substance, you would need to know the amount of carbon relative to other elements or compounds present in the substance. This is typically measured in terms of mass or mole ratios using techniques such as elemental analysis or spectroscopy.