bre2099 bre2099

22-05-2019
Chemistry

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How many molecules are present in 385.55g of NO2?

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legendarygirl9630 legendarygirl9630

22-05-2019

Answer:

5.05x10^24 molecules

Explanation:

1. Find the total mass of the compound

14 grams+32 grams= 46 grams per mole

2. Find the moles

385.55 g/ 46 g per mol= 8.38 moles

3. Multiply by Avogadro's Number (6.022 x 10^23)

8.38 moles x 6.022 x 10^23= 5.05x10^24 molecules

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