Homework #3
- Page ID
- 42482
Due on Feb 3 (Wed)
Q1
Ytterbium(atomic number = 70, molar mass = 173.05) has a fcc crystal structure and a density of 6.90 g/cm3. Determine the metallic radius of Ytterbium.
Q2
The aqueous solubility at 20°C of CO2 at 1 atm is equivalent to 878 mL CO2(g), measured at STP(1atm,0°C), per liter of water. What is the molarity of CO2 in water that is saturated with air at 1 atm and 20°C? Air contains 0.0397% CO2 by mol.
Q3
What are the partial and total vapor pressures of
A solution is prepared by mixing 25.4 g benzene, \(C_6H_6\), and 32.3 g toluene, \(C_6H_5CH_3\), at 25°C. The vapor pressure of \(C_6H_6\) at 25°C is 95.1 mmHg; the vapor pressure of \(C_6H_5CH_3\) is 28.4 mmHg. Calculate the following quantities.
- Partial pressure of benzene above the solution
- Partial pressure of toluene above the solution
- Total pressure of the vapor above the solution
- The mole fraction of benzene in the vapor above the solution