Find the Density at STP Pt

$P t$

Step 1

To find the mass of $1$ mole of $P t$ 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 $P t$ $=$ $(mass of Pt)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $P t$ $=$ $(195.08000183)$

Step 3

Remove parentheses.

mass of $1$ mole of $P t = 195.08000183 g$

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.

$\frac{195.08000183 g}{22.4 L}$

Step 6

Factor $195.08000183$ out of $195.08000183 g$ .

$\frac{195.08000183 (g)}{22.4 L}$

Step 7

Factor $22.4$ out of $22.4 L$ .

$\frac{195.08000183 (g)}{22.4 (L)}$

Step 8

Separate fractions.

$\frac{195.08000183}{22.4} \cdot \frac{g}{L}$

Step 9

Divide $195.08000183$ by $22.4$ .

$8.70892865 \frac{g}{L}$

Step 10

Combine $8.70892865$ and $\frac{g}{L}$ .

$\frac{8.70892865 g}{L}$

Find the Density at STP Pt

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