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

Chemistry
WAEC 2004
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]
  • A. 200 cm3
  • B. 400 cm3
  • C. 600cm3
  • D. 700cm3
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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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