A sample of 0.370 moles of a compound weighs 34.04 g. The sample is found to contain 10.36 g of X and the empirical formula of the compound is XO2. a) What is the molecular formula of the compound
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Ответ:
28
Explanation:
(30+29+25+20+X)/5=25
30+29+25+20+X=125
104+X=125
X=21
The fifth number is 21.
The 3 largest numbers are 30, 29 and 25.
Their average is 28.