The molecular formula of a compound is X_4O_6 | vedclass

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(B) Given the molecular formula $X_4O_6$,the ratio of moles of $X$ to moles of $O$ is $4:6$ or $2:3$.Mass of $X = 5.62 \ g$.Mass of $O = 10 \ g - 5.62

Vedclass · Accepted Answer

$30.8$

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(B) Given the molecular formula $X_4O_6$,the ratio of moles of $X$ to moles of $O$ is $4:6$ or $2:3$.Mass of $X = 5.62 \ g$.Mass of $O = 10 \ g - 5.62 \ g = 4.38 \ g$.Moles of $X = \frac{5.62}{M_X}$ and Moles of $O = \frac{4.38}{16}$.According to the formula,$\frac{n_X}{n_O} = \frac{4}{6} = \frac{2}{3}$.$\frac{5.62 / M_X}{4.38 / 16} = \frac{4}{6}$.$\frac{5.62}{M_X} 	imes \frac{16}{4.38} = \frac{2}{3}$.$M_X = \frac{5.62 	imes 16 	imes 3}{4.38 	imes 2} = \frac{269.76}{8.76} \approx 30.8 \ amu$.

The molecular formula of a compound is $X_4O_6$. If $10 \ g$ of the compound contains $5.62 \ g$ of $X$,what is the approximate atomic mass of $X$ in $amu$?

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