Answer:
Step-by-step explanation:
not sure what 10# is
but you solve this way
(2.5 X 10 #) divide by (6.02 X 10^23) X 28 g
6.02 x 10^23 is avogadros number use cause its in molecules
28 is the molar mass from the periodic table for CO
if I calculate it with 2.5 X 10 this is the answer 1.16 X 10^-21 g CO