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MariettaO [177]
3 years ago
5

Which is a pure substance??

Chemistry
2 answers:
sveta [45]3 years ago
4 0
The answer is A. Table salt is a pure substance.
Lostsunrise [7]3 years ago
4 0
I think it’s a the correct answer
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Dichlorine monoxide, Cl2O is sometimes used as a powerful chlorinating agent in research. It can be produced by passing chlorine
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Answer:

% yield =  82.5%

Explanation:

HgO + 2Cl₂ →  HgCl₂ +  Cl₂O

Our reactants are:

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Our products are:

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We do not have information about moles of reactants, but we do know the theoretical yield and the grams of product, in this case Cl₂O, we have produced.

Percent yield = (Yield produced / Theoretical yield) . 100

Theoretical yield is the mass of product which is produced by sufficent reactant. We replace data:

% yield = (0.71 g/0.86g) . 100 = 82.5%

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