finding quite tricky help me plsssss

You can use the molar mass of oxygen gas (O

_{2}) and Avogadro's number as conversion factors in this problem. The molar mass is good for "g→mol" or "mol→g" conversions. Avogadro's number is good for "molecules→moles" or "moles→molecules" conversions.Avogadro's number is the number of things (6.022 x 10

^{23}) in a mole of things (e.g., there are 6.022 x 10^{23}molecules of O_{2}in one mole of O_{2}).Molar masses are found on the periodic table. The molar mass of an element is the mass, in grams, of a mole of atoms for each element. It is 16.00 g/mol for O. Because there are two O atoms in O

_{2}, the molar mass for O_{2}is 32.00 g/mol.The calculation can be planned out like this, because we have conversion factors for each of the two steps.

grams O

_{2}→ mol O_{2}→ molecules O_{2}And the calculation steps are set up this way:

250 g O

_{2}x (1 mol O_{2}/ 32.00 g O_{2}) x (6.022 x 10^{23}molecules O_{2}/ 1 mol O_{2}) =

**4.7 x 10**^{24}molecules
## Comments

^{24}MOLECULES of oxygen