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What is the number of oxygen atoms in 32g of the gas? (O = 16,...

Chemistry
WAEC 1992

What is the number of oxygen atoms in 32g of the gas? (O = 16, L = 6.0 X 10\(^{23}\) mol\(^{-1}\))

  • A. 3.2 X 10 23
  • B. 6.0 X 1023
  • C. 1.2 X 1024
  • D. 1.6 X 1024
  • E. 2.0 X 1024
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Correct Answer: Option B
Explanation

Oxygen is Diatomic

: 1 mole of oxygen contains 2 ATOMS

→ 2 X 16g = 32g

32g of the gas = 6.0 X 10\(^{23}\) mol\(^{-1}\)

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