When the molecular mass of a molecule is expressed in grams, it is called molar mass. The molar mass of CO is 28 grams.
moles= mass/ molar mass
moles= 275.13 grams/ 28 grams
moles= 9.83
Number of atoms in one mole of CO= 6.022 x 1023 atoms
Number of atoms in 9.83 moles of CO= 9.83* 6.022 x 1023 atoms
Number of atoms in 9.83 moles of CO= 59.17 x 1023 atoms
moles= mass/ molar mass
moles= 275.13 grams/ 28 grams
moles= 9.83
Number of atoms in one mole of CO= 6.022 x 1023 atoms
Number of atoms in 9.83 moles of CO= 9.83* 6.022 x 1023 atoms
Number of atoms in 9.83 moles of CO= 59.17 x 1023 atoms