Calculate each of the following quantities:

(a) Mass (g) of 8.35 mol of copper(I) carbonate

(b) Mass (g) of $4.04 \times 10^{20}$ molecules of dinitrogen pentoxide

(c) Amount (mol) and number of formula units in 78.9 $\mathrm{g}$ of sodium perchlorate

(d) Number of sodium ions, perchlorate ions, chlorine atoms, and oxygen atoms in the mass of compound in part (c)

## Discussion

## Video Transcript

No transcript available

## Recommended Questions

Calculate the following quantities:

$$

\begin{array}{l}{\text { (a) mass, in grams, of } 1.50 \times 10^{-2} \text { mol CdS }} \\ {\text { (b) number of moles of } \mathrm{NH}_{4} \mathrm{Cl} \text { in } 86.6 \mathrm{g} \text { of this substance }} \\ {\text { (c) number of molecules in } 8.447 \times 10^{-2} \mathrm{mol} \mathrm{C}_{6} \mathrm{H}_{6}} \\ {\text { (d) number of } \mathrm{O} \text { atoms in } 6.25 \times 10^{-3} \mathrm{mol} \mathrm{Al}\left(\mathrm{NO}_{3}\right)_{3}}\end{array}

$$

Calculate the following quantities:

$$

\begin{array}{l}{\text { (a) mass, in grams, of } 0.105 \text { mol sucrose }\left(\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}\right)} \\ {\text { (b) moles of } \mathrm{Zn}\left(\mathrm{NO}_{3}\right)_{2} \text { in } 143.50 \mathrm{g} \text { of this substance }} \\ {\text { (c) number of molecules in } 1.0 \times 10^{-6} \mathrm{mol} \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}} \\ \text { (d) number of }

\mathrm{N} \text { atoms in } 0.410 \mathrm{mol} \mathrm{NH}_{3}\end{array}

$$

How many moles of compound are in each

of the following samples:

$$

\begin{array}{l}{\text { a. } 6.60 \mathrm{g}\left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4} \text { ( molar mass of }} \\ {\left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4}=132.17 \mathrm{g} / \mathrm{mol} )} \\ {\text { b. } 4.5 \mathrm{kg} \text { of } \mathrm{Ca}(\mathrm{OH})_{2} \text { (molar mass of }} \\ {\mathrm{Ca}(\mathrm{OH})_{2}=74.10 \mathrm{g} / \mathrm{mol} )}\end{array}

$$