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# Calculate each of the following quantities:(a) Amount (mol) of 0.588 g of ammonium bromide(b) Number of potassium ions in 88.5 $\mathrm{g}$ of potassium nitrate(c) Mass (g) of 5.85 mol of glycerol $\left(\mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O}_{3}\right)$(d) Volume (L) of 2.85 $\mathrm{mol}$ of chloroform $\left(\mathrm{CHCl}_{3} ; d=1.48 \mathrm{g} / \mathrm{mL}\right)$(e) Number of sodium ions in 2.11 mol of sodium caa(f) Number of atoms in 25.0$\mu \mathrm{g}$ of cadmium(g) Number of atoms in 0.0015 mol of fluorine gas

## a) $\mathrm{n}\left(\mathrm{NH}_{4} \mathrm{Br}\right)=0,006 \mathrm{mol}$b) $\mathrm{N}\left(\mathrm{KNO}_{3}\right)=\mathrm{n}^{*} \mathrm{N}_{A}=5,27^{*} 10^{23}$ moleculesc) $\mathrm{m}=538,73 \mathrm{g}$d) $\mathrm{V}=229,89 \mathrm{mL}$e) $\mathrm{N}(\mathrm{Na})=2,54^{*} 10^{24}$ ionsf) $\mathrm{N}(\mathrm{Cd})=1,34^{*} 10^{17}$ atomsg) $\mathrm{N}(\mathrm{F})=\mathrm{n}(\mathrm{F})^{*} \mathrm{N}_{A}=1,81^{*} 10^{21}$ atoms

#### Topics

Chemical reactions and Stoichiometry

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##### Allea C.

University of Maryland - University College

##### Jake R.

University of Toronto

### Video Transcript

University of Maine

#### Topics

Chemical reactions and Stoichiometry

##### Allea C.

University of Maryland - University College

##### Jake R.

University of Toronto