Question

a 50.00 g sample of an unknown compound is found to contain 17.97 g of al and 32.03 g of s. what is the percent of al in the compound? ?% al

Explanation:

Step1: Recall the formula for mass percentage

The formula for mass percentage (\(\%\)) of an element in a compound is \(\%\text{ of element}=\frac{\text{mass of element}}{\text{mass of compound}}\times100\)

Step2: Substitute the given values

Here, mass of \(Al = 17.97\space g\) and mass of compound \(=50.00\space g\)
\(\%\text{ of }Al=\frac{17.97}{50.00}\times 100\)

Step3: Calculate the value

\(\frac{17.97}{50.00}\times 100=\frac{1797}{50}= 35.94\)

Answer:

\(35.94\%\)