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Komok [63]
4 years ago
15

A gas cylinder contains exactly 15 moles of oxygen gas (O2). How many molecules of oxygen are in the cylinder? 4.01 × 1022 molec

ules 6.02 × 1023 molecules 9.03 × 1024 molecules 2.89 × 1026 molecules
Chemistry
2 answers:
kolezko [41]4 years ago
5 0
Moles are used conveniently in chemistry especially in stoichiometric calculations involving reactions. The unit of mole is a collective term that holds 6.022×10^23 particles. These particles is a general term for any small units of matter including molecules, atoms and sub-particles. This ratio of 6.022×10^23 particles to 1 mole is known to be the Avogadro's number. Its exact number is actually <span>6.0221409</span>×10^23. We use this constant in our stoichiometric calculation as follows:

15 moles oxygen * (6.022×10^23 molecules/ 1 mole oxygen) = 9.033×10^24 molecules of oxygen
Nikitich [7]4 years ago
4 0

Answer:

C)9.03 x 10 23

Explanation:

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