A Chemistry Student Determined the Empirical Formula for Tungsten Oxide

question 170

Multiple Choice

A chemistry student determined the empirical formula for tungsten oxide (W_xO_y) . To do so, he heated tungsten with oxygen in a crucible. The data that he recorded are shown below: $\begin{array}{lr}\text { Weight of crucible } & 11.120 \mathrm{~g} \\\text { Weight of tungsten } & 8.820 \mathrm{~g} \\\text { Weight of crucible and product } & 22.998 \mathrm{~g}\end{array}$ What is the empirical formula of tungsten oxide

• A) W₂O₃
• B) WO₃
• C) WO₂
• D) WO₄
• E) None of the above

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