Question 1
A solution is prepared by adding 1.43 mol of KCl to 889 g of water. The concentration of KCl is ________ molal.
◦ 1.61
◦ 0.622
◦ 622
◦ 1.27 × 10
3◦ 1.61 × 10
-3Question 2
A solution is prepared by dissolving 16.4 g of benzene (C
6H
6) in 282 g of carbon tetrachloride
The concentration of benzene in this solution is ________ molal. The molar masses of
and CCl
4 are
and
respectively.
◦ 5.50
◦ 7.45 × 10
-4◦ 0.704
◦ 0.0550
◦ 0.745