Ratio between number of molecules in equal masses of nitrogen and oxygen is?
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=> the molar mass of nitrogen -> 14 u
nd molar mass of oxygen -> 16 u
now let 2u same mass of both
then,
no of moles of oxygen => 16/2 => 8 mole
no of moles of nitrogen=> 14/2 => 7 mole
now,
no of molecules of oxygen
=> 8×6.02×10^23
no of molecules of nitrogen
=> 7×6.02×10^23
now ratio between oxygen nd nitrogen
=> 8×6.02×10^23/7×6.02×10^23
=> 8/7 => 8:7
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