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An oxide XO2 has a vapour density of 32. What is the atomic mass of X?

An oxide XO2 has a vapour density of 32. What is the atomic mass of X?
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A 32
  • B 20
  • C 14
  • D 12
Correct Answer: Option A
Explanation:
XO2 → 32 * 2
X + 16 * 2 → 64
X = 64 - 32
=32

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