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At 0^(@)C the density of a gaseous oxide...

At `0^(@)C` the density of a gaseous oxide at 2 bar is same as that of nitrogen at 5 bar What is the molecular mass of the oxide ? .

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`d =(Pm)/(RT)`
`:. (P_(N2) xx m_(N_(2)))/(RT) = (P_("oxide" x) xxm_("oxide"))/(RT)`
`:. (5 xx 28)/(RT) = (2 xx "mo1.mass of oxide")/(RT)`
Molecular mass of gaseous oxide `= 70g//mo1` .
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