1.

Calculate mass of 3.011 xx 10^(23) number of N_(2) molecules (mass from number) .

Answer»

Solution :The number of moles , n = `("given number of PARTICLES")/("Avogadro number") = (N)/(N_(0))`
`= (3.011 XX 10^(23))/(6.022 xx 10^(23))`
`implies m = M xx n = 14 xx (3.011 xx 10^(23))/(6.022 xx 10^(23))`
`=14 xx 0.5 = 7g `


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