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Determine the number of representative particles in each of the following:
(a) 0.294 mol silver
____ atoms

(b) 8.98 10-3 mol sodium chloride
____ formula units

(c) 23.3 mol carbon dioxide
____ molecules

(d) 0.310 mol nitrogen (N2)
____ molecules

Sagot :

Answer:

(a) 0.294 mol silver = [tex]1.770 * 10^{23}[/tex]  

(b) 8.98 * 10-3 mol sodium chloride - [tex]5.407 *10^{23}[/tex]  

(c) 23.3 mol carbon dioxide  = [tex]1.403 * 10^{25}[/tex]

(d) 0.310 mol nitrogen (N2) = [tex]1.866 * 10^{23}[/tex]

Explanation:

In one mole there are [tex]6.022 * 10^{23}[/tex] atoms/molecules

(a) 0.294 mol silver = [tex]6.022 * 10^{23} * 0.294 = 1.770 * 10^{23}[/tex]  

(b) 8.98 * 10-3 mol sodium chloride - [tex]5.407 *10^{23}[/tex]  

(c) 23.3 mol carbon dioxide  = [tex]23.3 * 6.022 * 10^{23} = 1.403 * 10^{25}[/tex]

(d) 0.310 mol nitrogen (N2) = [tex]0.310 * 6.022 * 10^{23} = 1.866 * 10^{23}[/tex]

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