Question

How many moles of nitrogen are in 2.0×10−2mole of quinine?

Express your answer using two significant figures.

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Answer 1

Answer: 4 x 10 ∧-2 moles of nitrogen.

Step-by-step explanation:

The chemical formular for quinine is ; C20 H24 N2 O2

As can be seen from the chemical formular;

1 mole of quinine contains 2 moles of Nitrogen

Thus; 2.0 x 10 ∧-2 moles of quinine would contain

2.0 x 10 ∧-2 x 2 = 4 x 10 ∧-2 moles of nitrogen.

Therefore 4 x 10 ∧-2 moles of nitrogen are in 2.0×10−2mole of quinine