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# Inorganic Chemistry

### Working with a radioactive material

The half life of Cl is 9.5 x 10(exponent 12)s. How many atoms of Cl are present in a sample with an activity of 1.5 x 10(exponent 9) atoms/s a. 2.1 x 10(exponent 22) atoms b. 6.3 x 10(exponent 3) atoms c. 4.9 x 10(exponent negative 23) atoms d. 1.4 x 10(exponent 22) atoms e. 7.0 x 10(exponent 23) atoms

### Electron configurations, the periodic table

Write the electron configuration for Ba, atomic number 56.

### Calculating the change in G.

What is the change in G at 55 degrees Celsius for a reaction with a change in H=124kJ and change in S = 83.1J/K?

### Determining the amount of time required to electroplate silver

An electrolytic cell is used to plate silver from a silver nitrate solution onto an electrode. How many seconds are required to deposit 5.0g of silver if the current is kept constant at 2.0 amperes? Assume 100% current efficiency.

### Writing cell notation.

What is the correct cell notation for the reaction below: Cd2+(aq)+Zn(s)-->Cd(s)+Zn2+(aq)

### Concentration in a saturated solution

What is the concentration of Hg2(exponent 2 positive) in a saturated solution of Hg2Cl2 if Ksp=1 A 10 (exponent negative 18)?

### Finding precipitate formed.

For AgCl, what will occur if 250ml of 1.5 A 10^-13 M of NaCl is mixed with 250mL of 2.0 A 10^-7 M of AgNO3? a. A precipitate would form because Ksp>P b. A precipitate would form because P>Ksp c. No precipitate would form because Ksp>P d. No precipitate would form because P>Ksp e. No precipitate would form because P=Ksp

### Geometric Isomers Existing

How many geometric isomers exist for FeCl4(CN)2(exponent 3 negative)?

### Determining the number of geometric isomers that exist for a molecule.

How many geometric isomers exist for Cu(en)Br2?

### Formation constant

The formation constant for Cu(NH3)4(exponent 2 positive) is 2x10(exponent 12). What is the ratio of Cu(NH3)4(exponent 2 positive) to Cu(exponent 2 positive) in 0.1M NH3?

### Calculating the maximum absorbance of light given a crystal field splitting energy

The crystal field splitting energy for TiF6^-3 is 203 kJ/mol. At what wavelength does the maximum absorbance of light occur for this complex?

### Calculating the Unpaired Electrons

Question: Determine the number of unpaired electrons in an octahedral, strong-field Co(exponent positive 2) complex ion.

### Identifying ligands and their charges

Identify the ligands and their charges in Co(en)2(CN)2+.

### Writing chemical formulas

What is the correct formula for a nickel(II) complex which contains 4 ammonia molecules and 2 water molecules?

### Writing the net ionic equations.

What is the net ionic equation for the aqueous reaction of ammonium chloride with sodium hydroxide?

### Determining the products when given the reactants.

There are two beakers each with distilled water. One has trihydrogen borate + potassium hydroxide (H3BO3 + KOH) and the other has trihydrogen borate + sodium hydroxide (H3BO3 + NaOH). What are the products that are formed after the solutions are heated and placed in an ice water bath? Hint: There will be a precipitate.

### Predicting whether a precipitate forms based on the solubility product and concentrations.

Describe how you would predict whether a precipitate will form when two solutions are mixed. Start with the minimum information needed and then show how you would make the prediction. Assume a constant temperature of 298 K and that the volumes of the two solutions are additive.

### Electronic configuration of compounds and molecules

1. What is the name of the following compounds? a) SO2 b) NO2 2. Name the shapes of these molecules? a) sulphur dioxide b) sulphur hexafluride 3. Write the electronic configuration of a) N2+ b) F- c) O2-