- Which contains the greatest number of moles of oxygen atoms?
A. 0.05 mol Mg(NO3)2
B. 0.05 mol C,H,(NO2)2
C. 0.1 mol H2O
D. 0.1 mol NO2
Hello! How do you solve this question? The answer is A
thanks!
hi
A) if 1 mol is Na molecules then the sample has 0,05 * 6,02 * 10²³ = 0,303 * 10²³ molecules. For every molecule there is 6 oxygen atoms so 6 * 0,303 * 20²³ = 1,818 * 10²³ O atoms.
B) 4 * 0,303 * 10²³ = 1,212 * 10²³
C) 0,602 * 10²³
D) 2 * 0,602 = 1,204 * 10²³
So the correct answer must be A). Hope this helps!
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