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4 years ago

How many moles are in 4.65 x10^24 molecules of no2?

Chemistry

2 answers:

Yuri [45]4 years ago

6 0

1mole =6*10^23
So divided 4.65*10^24 by 6*10^23=7.75

kotykmax [81]4 years ago

4 0

Answer:

$n_{NO_2}=7.72molNO_2$

Explanation:

Hello,

In this case, the following molecule-mole relation is applied by knowing that in 1 mole of molecules there $6.022x10^{23}$ molecules that is equal to the Avogadro's number, thus:

$n_{NO_2}=4.65x10^{24}molecules NO_2*\frac{1molNO_2}{6.022x10^{23}moleculesNO_2} \\n_{NO_2}=7.72molNO_2$

Best regards.

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Answer: (A) $H_{3}O^{+}(aq) + HPO^{2-}_{4}(aq) \rightarrow H_{2}PO^{2-}_{4}(aq) + H_{2}O(l)$

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