Which statements about nuclear fission and nuclear fusion are true? Select the two correct answers. (1 point) They both occur in the nucleus of an atom
They both involve two atoms fusing into one atom
They both reloase large amounts of energy
They both involve one atom splitting into two atorns

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! =)