If a sample contains 21.2 g n, how many moles of n does it contain? 0.66 mol 1.51 mol 14.01 mol 297.01 mol

Hello!

If a sample contains 21.2 g N, how many moles of N does it contain?

0.66 mol

1.51 mol

14.01 mol

297.01 mol

We have the following data:  

m (mass) = 21.2 g

MM (Molar mass of Nitrogen) = 14 g / mol

n (number of moles) = ?

Formula:  

Solving:  

1.51 mol

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I Hope this helps, greetings ... Dexteright02! =)

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explanation: