You have 12.6 g of an unknown substance A and 35.0 g of chlorine gas

You have 12.6 g of an unknown substance A and 35.0 g of chlorine gas

 

 

You have 12.6 g of an unknown substance A and 35.0 g of chlorine gas.

Substance A contains 1.5 times as many molecules as the chlorine gas.

What is the identity of A?

 

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n = W / M

( 참고 https://ywpop.tistory.com/7738 )

 

 

 

Cl2의 몰수 = 35.0 g / (70.91 g/mol) = 0.494 mol

 

 

 

A의 몰수 = 0.494 × 1.5 = 0.741 mol

 

 

 

A의 몰질량 = 12.6 g / 0.741 mol = 17 g/mol

---> NH3