Question 1
A solution contains 15.5 g of NaOH dissolved in water to give a total mass of 125.0 g. What is the molality of the solution?
◦
0.00310 m◦
0.124 m◦
3.54 m◦
3.10 m◦
124 mQuestion 2
A solution is made by adding 0.100 mole of ethyl ether to 0.401 mole of ethyl alcohol. If the vapor pressure of ethyl ether and ethyl alcohol at 20°C are 375 torr and 20.0 torr, respectively, the vapor pressure of the solution at 20°C (assuming ideal behavior) is:
◦
90.9 torr◦
304 torr◦
58.8 torr◦
395 torr◦
none of these are correct