Question 443c2

Mar 30, 2017

Explanation:

Using Dimensional Analysis , we will need the conversion factors for Argon:

$\left(1 \text{ mole Ar")/(40" g Ar}\right)$ to go from grams to moles and $\left(40 \text{ g Ar")/(1" mole Ar}\right)$ to go from moles to grams

Dimensional Analysis starts by putting your given value over 1:

$\frac{452 \text{ g Ar}}{1}$

Then you multiply by the conversion factor that will cancel the given units and replace them with the desired units:

$\left(452 \text{ g Ar")/1(1" mole Ar")/(40" g Ar}\right)$

Please observe how the units cancel:

$\left(452 \cancel{\text{ g Ar")/1(1" mole Ar")/(40cancel" g Ar}}\right)$

You are only left with moles of Argon:

(452" mole Ar")/40 = 11.3" mole Ar"#