Question

type the correct answer in the box. tungsten carbide is becoming popular for making jewelry. a chemist is examining a sample of tungsten carbide (chemical formula wc). what is the percent composition of tungsten in this compound? round your answer to the nearest whole percent. the percent composition of tungsten is %

Explanation:

Step1: Find molar masses

The molar mass of tungsten (W) is approximately 183.84 g/mol, and the molar mass of carbon (C) is approximately 12.01 g/mol. The molar mass of tungsten - carbide (WC) is $M = 183.84+12.01=195.85$ g/mol.

Step2: Calculate percent composition of tungsten

The percent composition of tungsten in WC is given by the formula $\text{Percent composition of W}=\frac{\text{Molar mass of W}}{\text{Molar mass of WC}}\times100\%$. Substituting the values, we get $\frac{183.84}{195.85}\times100\% \approx 94\%$.

Answer:

94