Question

Which of the following contains atoms equal to those in<br />12 g Mg? (At. wt. Mg = 24)<br />(a) 12 gm C<br />(b) 7 gm N2<br />(c) 32 gmO2<br />(d) None of these​

Answer 1

Answer:

7g of N2

Explanation:

no. of atoms=no. of moles *Avagadronumber

since avagradro no. is constant,no. of moles considered

no.of moles = mass/molarmass

n= 12/24 is 0.5 for Mg

n= 7/14 is 0.5 for N2

n= 32/32 is 1 for O2

n= 12/12 is 1 for C