A student on the track team is able to run the 100 meter dash in 12.3 seconds. What is the average speed of this runner during the dash? 0.123 m/s
0.813 m/s
8.130 m/s
1230.000 m/s

Asolution is made by dissolving 2.3 moles of sodium chloride (nacl) in 0.155 kilograms of water. if the molal boiling point constant for water (kb) is 0.51 °c/m, what would be the boiling point of this solution? show all the steps taken to solve this problem.