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A flask contains 4.4g of co2 gas clculate

1)how many amount of co2 does it contain.
2)how many molecules of co2 gas are present in sample.
3)how many atoms of oxy gen are present in the given sample.[atomic mass of c=12u,o2=16u]


Molecular mass of co2 gas=44g[Atomic mass of c=12g,atomic mass of o=16g]
     4.4g=1/44*4.4=0.1 mole
   0.1 mole=6.022*10^23*0.1molecules=6.022*10^22molecules
2 3 2
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