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A sample of an oxide of Mercury weighed 100g when this was heated, oxygen was...

A sample of an oxide of Mercury weighed 100g when this was heated, oxygen was given off,and 1.00g of Mercury metal only was left. What's the formula of the oxide ?
{Hg = 200 ,O=16}?
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Asked by Omobolanle on 1st May, 2021
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