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What volume of hydrogen would be left over when 300cm3 of oxygen and 1000cm of hydrogen ...

What volume of hydrogen would be left over when 300cm3 of oxygen and 1000cm of hydrogen are exploded in a sealed tube? [2H2(g) + O2(g) → 2H2 Og]
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A 200 cm3
  • B 400 cm3
  • C 600cm3
  • D 700cm3
Correct Answer: Option B
Explanation:
2H2(g) + O 2(g) → 2H2Og
2V IV 2V
600cm3 300cm3 600cm3
The volume of hydrogen left over
= 1000 - 600 = 400cm3?

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