Find the Density at STP Nb_8

$N b_{8}$

Step 1

To find the mass of $1$ mole of $N b_{8}$ 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 $N b_{8}$ $=$ $8 (mass of Nb)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $N b_{8}$ $=$ $8 (98.91000366)$

Step 3

Multiply $8$ by $98.91000366$ .

mass of $1$ mole of $N b_{8} = 791.28002929 g$

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.

$\frac{791.28002929 g}{22.4 L}$

Step 6

Factor $791.28002929$ out of $791.28002929 g$ .

$\frac{791.28002929 (g)}{22.4 L}$

Step 7

Factor $22.4$ out of $22.4 L$ .

$\frac{791.28002929 (g)}{22.4 (L)}$

Step 8

Separate fractions.

$\frac{791.28002929}{22.4} \cdot \frac{g}{L}$

Step 9

Divide $791.28002929$ by $22.4$ .

$35.3250013 \frac{g}{L}$

Step 10

Combine $35.3250013$ and $\frac{g}{L}$ .

$\frac{35.3250013 g}{L}$

Find the Density at STP Nb_8

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