Consider the following reaction: PCl5(g)⇌PCl3(g)+Cl2(g)

Initially, 0.65 mol of PCl5 is placed in a 1.0 L flask. At equilibrium, there is 0.16 mol of PCl3 in the flask. What is the equilibrium concentration of PCl5?

Express your answer to two significant figures and include the appropriate units.

Calculate the pH and pOH of each of the following solutions.

- Express your answer to two decimal places. Enter your answers numerically separated by a comma.

-A) [H3O+]= 1.6×10⁻⁸ M

-B) [H3O+]= 1.0×10⁻⁷ M

-C) [H3O+]= 2.5×10⁻⁶ M

At 650 K, the reaction MgCO3(s)⇌MgO(s)+CO2(g) has Kp=0.026. A 10.0-L container at 650 K has 1.0 g of MgO(s) and CO2 at P=0.260 atm. The container is then compressed to a volume of 0.100 L. Find the Mass of MgCO₃ that forms.

Honey is made from a mixture of fructose, glucose, and sucrose. How can you use Benedict's reagent to determine the number of moles of sucrose in a 1.0 g sample of honey? (Hint: If excess Cu²⁺ is present the difference in [Cu²⁺] before and after reaction is twice the concentration of reducing sugar present.)

A heat pump uses groundwater at 12°C as an energy source. If the energy delivered by the heat pump is to be 60 MJ/h, estimate the minimum mass flow rate of groundwater if the compressor operates with R-134a between pressures of 100 kPa and 1.0 MPa. Calculate the minimum compressor power.

A smoke detector consists of three components with reliabilities of 0.995, 0.994, and 0.996.

a.         What is the reliability of the system?

b.         If identical backups are provided for each component, what is the reliability of the new system? Assume switch reliabilities of 1.0.

c.         What is the reliability of the system in part b if the switch reliabilities are 0.998?

At 650 K, the reaction MgCO3(s)⇌MgO(s)+CO2(g) has Kp=0.026.

A 14.5 L container at 650 K has 1.0 g of MgO(s) and CO2 at P = 0.0260 atm. The container is then compressed to a volume of 0.900 L .

Find the mass of MgCO3 that is formed.

Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0010 % Pb by mass

How much of the water (in mL) contains 145 mg of Pb? (Assume a density of 1.0 g/mL.) Express your answer using two significant figures.

Two investment advisers are comparing performance. One averaged a 19% return and the other a 16% return. However, the beta of the first adviser was 1.5, while that of the second was 1.0. If the T-bill rate were 3% and the market return were 15%, which adviser would be the superior stock selector?