Find the Density at STP Mg

$M g$

Step 1

To find the mass of $1$ mole of $M g$ look up the atomic mass of each element and multiply it by the number of atoms contained in each element in the molecule.

mass of $1$ mole of $M g$ $=$ $(mass of Mg)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $M g$ $=$ $(24.30999946)$

Step 3

Remove parentheses.

mass of $1$ mole of $M g = 24.30999946 g$

Step 4

One mole of any gas occupies $22.4 L$ at STP (standard temperature and pressure).

$V = 22.4 L$

Step 5

Density is mass over volume.

$\frac{24.30999946 g}{22.4 L}$

Step 6

Factor $24.30999946$ out of $24.30999946 g$ .

$\frac{24.30999946 (g)}{22.4 L}$

Step 7

Factor $22.4$ out of $22.4 L$ .

$\frac{24.30999946 (g)}{22.4 (L)}$

Step 8

Separate fractions.

$\frac{24.30999946}{22.4} \cdot \frac{g}{L}$

Step 9

Divide $24.30999946$ by $22.4$ .

$1.08526783 \frac{g}{L}$

Step 10

Combine $1.08526783$ and $\frac{g}{L}$ .

$\frac{1.08526783 g}{L}$

Find the Density at STP Mg

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