ANSWER
The number of moles of argon in 354g of argon is 8.615 moles
STEP-BY-STEP EXPLANATION:
Given parameters
• Mass of argon = 354g
,• The molar mass of argon = 39.948g/mol
To find the number of moles, we need to apply the mole formula
[tex]\text{Mole = }\frac{\text{ reacting mass}}{\text{ molar mass}}[/tex]
The next thing is to substitute the above parameters into the formula
[tex]\begin{gathered} \text{Mole = }\frac{354}{39.948} \\ \text{mole = 8.615 moles} \end{gathered}[/tex]Therefore, the number of moles of argon in 354g of argon is 8.615 moles