Reference no: EM13184465
1. A 0.116M ionic solution has an osmotic pressure of 7.8atm at 38?C.
A. Calculate the van't Hoff factor (i) for this solution.
2. Calculate the vapor pressure at 25 ?C of an aqueous solution that is 5.80% NaCl by mass.
3. Potassium perchlorate (KClO4) has a lattice energy of -599 kJ/mol and a heat of hydration of -548 kJ/mol.
A. Find the heat of solution for potassium perchlorate when 10.5g of potassium perchlorate is dissolved with enough water to make 104.9mL of solution.
B. Determine the temperature change that occurs when 10.5g of potassium perchlorate is dissolved with enough water to make 104.9mL of solution. (Assume a heat capacity of 4.05 J/g??C for the solution and a density of 1.05 g/mL.)
4. A saturated solution was formed when 5.85×10?2L of argon, at a pressure of 1.0 atm and temperature of 25 ?C, was dissolved in 1.0 L of water.
A. Calculate the Henry's law constant for argon.
5. An aqueous solution contains 11.4% NaCl by mass
A. What mass of water (in grams) is contained in 2.9L of the vapor above this solution at 55 ?C? The vapor pressure of pure water at 55 ?C is 118 torr. (Assume a van't Hoff factor of 1.9 for NaCl.)
5. What is the freezing point of an aqueous solution that boils at 105.8?C?
|
Knowledge level regarding individual taxes
: What is your experience and knowledge level regarding individual taxes? How did your personal tax experience and knowledge help you in completing this tax return?
|
|
Determine the poverty rate
: Between 2009 and 2010, the poverty rate increased for non-Hispanic Whites (from 9.4 percent to 9.9 percent), for Blacks (from 25.8 percent to 27.4 percent), and for Hispanics (from 25.3 percent to 26.6 percent). For Asians, the 2010 poverty rate (..
|
|
Compute the radius of an iridium atom
: Calculate the radius of an iridium atom, given that Ir has an FCC crystal structure, a density of 22.4 g/cm3,
|
|
Demonstrated its social and environmental accountability
: Discuss the way in which BHP Billiton has demonstrated its social and environmental accountability and discuss the stance and initiatives of the Australian accounting profession on corporate social responsibility
|
|
Compute the van''t hoff factor
: Calculate the van't Hoff factor (i) for this solution. 2. Calculate the vapor pressure at 25 ?C of an aqueous solution that is 5.80% NaCl by mass.
|
|
Indicate the desirability of discounting the price
: You are the manager of a large automobile dealership who wants to learn more about the effectiveness of various discounts offered to customers over the past 14 months. Following are the average negotiated prices for each month and quantities sold ..
|
|
State down the integral you would need to evaluate
: The following questions pertain to the magnitude of the x-component of the speed(absolute value of the velocity) cx=|vx| of atoms in a gas, whose probability distriubution has the form P(cx)= ae^-bc2/x. A. Write down the integral you would need to ..
|
|
Compute the beginning balance in the cash account
: Compute the beginning balance in the cash account and how much cash was provided by (or used in) operating activities?
|
|
Describe the u.s. market for wine under free trade
: Assuming that American imports of wine are a small part of total world wine production, draw a graph for the U.S. market for wine under free trade. b.) Now suppose that a tariff is place on the importation of wine into the United States to protec..
|