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:
\(n = \dfrac{m}{MM}\)
Solving:
\(n = \dfrac{m}{MM}\)
\(n = \dfrac{21.2\:\diagup\!\!\!\!\!g}{14\:\diagup\!\!\!\!\!g/mol}\)
\(\boxed{\boxed{n\approx 1.51\:mol}}\end{array}}\qquad\checkmark\)
Answer:
1.51 mol
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I Hope this helps, greetings ... Dexteright02! =)
