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A sample of an oxide of mercury weighed 1.00g. When this was heated, oxygen was...

Chemistry
JAMB 1980

A sample of an oxide of mercury weighed 1.00g. When this was heated, oxygen was given off, and 1.00g of mercury metal only was left. What is the formula of the oxide?

  • A. Hg2O
  • B. HgO2
  • C. HgO2
  • D. HgO
  • E. None of the above
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Correct Answer: Option E
Explanation

Various oxides of mercury: Mercury(I) oxide (mercurous oxide), Hg\(_2\)O. Mercury(II) oxide (mercuric oxide), HgO.

No specific oxide of mercury is refered in the question. 

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WAEC offline past questions - with all answers and explanations in one app - Download for free
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709