Question

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

Answer 1

(a) 0.294 mol silver =
`1.770 * 10^(23)`

(b) 8.98 * 10-3 mol sodium chloride -
`5.407 *10^(23)`

(c) 23.3 mol carbon dioxide =
`1.403 * 10^(25)`

(d) 0.310 mol nitrogen (N2) =
`1.866 * 10^(23)`

Step-by-step explanation:

In one mole there are
`6.022 * 10^(23)` atoms/molecules

(a) 0.294 mol silver =
`6.022 * 10^(23) * 0.294 = 1.770 * 10^(23)`

(b) 8.98 * 10-3 mol sodium chloride -
`5.407 *10^(23)`

(c) 23.3 mol carbon dioxide =
`23.3 * 6.022 * 10^(23) = 1.403 * 10^(25)`

(d) 0.310 mol nitrogen (N2) =
`0.310 * 6.022 * 10^(23) = 1.866 * 10^(23)`