Yield and atom economy of chemical reactions (chemistry only)

Medium

Metal $X\text{X}$ is extracted from an oxide of metal $X\text{X}$ by reaction with carbon.

The equation for the reaction is:

\text{XO} + \text{C} \rightarrow \text{X} + \text{CO}

The percentage atom economy for obtaining metal $X\text{X}$ by this method is 69.9%.

Calculate the relative atomic mass ( $ArA_{\text{r}}$ ) of metal $X\text{X}$ .

Relative atomic masses ( $ArA_{\text{r}}$ ): $C=12\text{C} = 12$ , $O=16\text{O} = 16$

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Yield and atom economy of chemical reactions (chemistry only) Questions