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Help me with "mol→g" conversion

I need to find out how many  molecules are in 250g of oxygen
asked Jul 13, 2017 in Chemistry by Kyleigh

1 Answer

250 g O2 x 1 mole o2  x 6.022x1023 molecules O2

                 32 g o2           1 mole O2 

answered Jul 13, 2017 by Heidi