Inorganic Chemistry Questions

7 Describe the physical process by which soap solubilizes dirt Hint Use the solubility principles to complete a diagram e g micelle showing many soap molecules as bridges between water and oil Label and explain the diagram further

A piece of metal was found on the side of the road The metal was put on a balance and found to have a mass of 79 10 g The volume was determined by placing the metal into a 27 00 ml column of oil which was displaced to 34 00 mL What was the volume of the unknown metal in mL What was the Density of this metal What was this metal O Volume 7 00 ml Density 11 3 g mL Metal lead Volume 4 00 ml Density 2 7 g ml Metal aluminum Volume 7 00 ml Density 19 1 g ml Metal uranium Volume 8 00 ml Density 7 14 g ml Metal zinc

Complete the table below by writing the symbols for the cation and anion that make up each ionic compound T ionic cation anion compound NaCl NiBra CaF Mnl Na T cl 0 X

Orbitals which result from solving the Schr dinger wave equation can be represented by ele ictures Match the orbitals below with their kind and identify their shapes Put letters in alphabetical order If none are correct leave the box blank A 1 s orbital 2 p orbital 3 d orbital B s orbitals have a p orbitals have a d orbitals have a C shape shape shape D

rmine the oxidation state of copper in monatomic Tap the arrows to set the value for the oxidation state copper

Consider the molecule with the following skeletal structure Experiment 10 Molecular Models and Covalent Bonding c OA H N H 1 Indicate the hybridization employed by each central atom a C b N c OA 2 Indicate the electron pair geometry about each central atom a C b N b pi bond s C 0H d OB d OB 3 Indicate the predicated bond angles around each central atom having more than one bond a C b N c OB Lab Re 4 Describe all the sigma o and pi n bonds in this molecule in the form of a hybridization and bonding scheme For example a hypothetical O H bond O 2sp2 H 1s is a sigma bond a sigma bond s

Match the picture below with the substance and indicate the correct summary of this behavior This substance is C Diamagnetic It is D Paramagnetic E Ferromagnetic In a magnetic field it is This substance is A Liquid Oxygen O 1 B Liquid Nitrogen N 1 It is F Strongly attracted G Attracted H Slightly repelled A Liquid Oxygen O 1 B Liquid Nitrogen N 1 C Diamagnetic D Paramagnetic E Ferromagnetic F Strongly attracted

25 grams of oxygen gas is heated in a container with a volume of 500 mL to 350 C What is the pressure in the container

ch the picture below with the substance and indicate the correct summary of this be This substance is C Diamagnetic It is D Paramagnetic E Ferromagnetic This substance is A Liquid Oxygen O 1 B Liquid Nitrogen N 1 In a magnetic field it is G Attracted It is In a magnetic field it is F Strongly attracted H Slightly repelled A Liquid Oxygen 0 1 B Liquid Nitrogen N 1 C Diamagnetic D Paramagnetic E Ferromagnetic F Strongly attracted G Attracted

Nitrogen and hydrogen gases are combined at high temperatures and pressures to produce ammonia NH3 If 104 7 g of N are reacted with excess H how many moles of NH3 will be formed Hint Write out and balance the equation O2 49 mol none of these options 5 60 mol 7 47 mol 3 74 mol

of the following describes the element He e all that apply orms a basic solution in water s one of the group of the least reactive elements belongs to a group consisting entirely of gases consists of diatomic molecules in elemental form s very reactive as a metal reacts vigorously with alkali metals to form salts

2 Why was the amount of copper produced used to determine which reaction occurred i e why wasn t the iron sulfate compound measured instead The amount of copper produced was used to determine which realtion occurred because the amount it weighed in grams is the theoretical yield and whatever reaction is closer to the actual yield determines which reaction occured

If I have an unknown quantity of gas held at a temperature of 900 K in a container with a volume of 25 0 liters and a pressure of 36 0 atm how many moles of gas do I have

6 The bond between atoms in a molecule of hydrogen chloride is a lonic b Covalent c metallic d polyatomic

3 The statutory period of redemption lasts how long a one month b ten days c six months d one week

Try to balance the following chemical reaction HC1O4 aq NO2 g HCl aq HNO3 aq

5 What is another name for the Uniform Real Estate Contract O a builder s contract b residential contract c agent contract d land contract

Name these coordination compounds formula V Br NH3 4 Cl CrC1 CO 4 Br Na AuCI H O name

2 Calculate AH for the following reactions using bond enthalpies a 2CO g O2 g 2CO2 g 1 0 3 100 1 Pal k b C2H2 g H2 g C2 H4 g Co Calze ION

Name these coordination compounds formula AuCl NH CI K FeCl H O K Co Br CO name

20 Which element is most likely to form an ionic bond with aluminum a lithium b nitrogen c lead d calcium

10 Suggest a frontier area in bioinorganic chemistry i e a newer area that will be should be investigated in the coming years

Calculate ΔH for the following reactions using bond enthalpies a. 2CO(g) + O2(g) →→2CO2(g) b. C₂H2(g) + H2(g) → C₂H4(g) c. 4NH3(g) + 5O2(g) →→ 4NO(g) + 6H₂O(g) d. Br2(g) + CH4(g) → CH3Br(g) + HBr(g)

A metal cylinder with a fixed volume was filled with gas to 4.00 atm pressure at room temperature, 30.0 C. The cylinder was then taken outside on a cold winter day where the temperature was -30.0 C. What is the pressure inside the cylinder?

For the following coordination complex: (Ni(NO₂)₂Br₂)^-2 Give the name Determine the geometry Give the coordination number of the central cation State which type if geometric isomers are present (if none are present, write "none")

What would you need to do to make a 13% solution of sodium chloride (NaCl)? Add 26 g of sodium chloride to a beaker and add water to make a final volume of 200 mL. Add 13 g of sodium chloride to 100 mL of water. Add 13 g of sodium chloride to a beaker and add water to make a final volume of 100 mL. Add 26 g of sodium chloride to 200 mL of water.

Order the atoms in each of the following sets from the least exothermic electron affinity to the most. (Enter multiple answers as acomma-separated list.) a. N, O, F ________ b. Al, Si, P_______

Benzoic acid C6H5COOH has a heat of combustion of -3227kJ/mol. A 1.221g- sample burns in a calorimeter that has a heat capacity of 1365J/°C, and which contains 1.200kg of water. What temperature change is observed in the calorimeter?

When burning ethanol in a closed system, which of the following is the best claim and reasoning? The ethanol reaction stops because a bromthymol blue solution that's present turns the same color as when ethanol vapor is blown into the solution Evaporated ethanol is produced because it burns. Water is produced because a bromthymol blue solution that's present turns the same color as when water vapor is blown into the solution. Carbon dioxide is produced because a bromthymol blue solution that's present tums the same color as when carbon dioxide is blown into the solution. " 1 2 3 4 5 6 8 9 10

A. Boiling Point and Freezing Point • The presence of solute "particles" causes the to become__ • Why does the boiling point of a solution increase? - Forming a_____in a solution in a solution - Solute particles_____molecules trying to enter the bubble

a) [NiH4]²- b) N3 c) Mo(CO) 6 d) PC|3l2 e) SiO44- For each of the molecules selected: Draw the correct molecular geometry, including resonance structures if appropriate. Provide the point group and the main symmetry elements (besides E). Determine the polarity of the molecule and the direction of the dipole.

SO2 reacts with H₂S as follows: 2H2S + SO2 --> 3S + 2H2O When 7.50 g of H2S reacts with 12.75 g of SO2, which statement is true? A. 0.266 moles of SO2 is consumed B. 0.111 moles of SO2 is consumed C. 0.221 moles of SO2 is consumed D.0.442 moles of SO2 is consumed

In the series of Werner complexes (after the German-Swiss chemist) [CoX(NH3)5]n* with X = I™, CI', NH3, there is a color variation from purple (1), through pink (CI) to yellow (NH3). Explain this observation.

A chemist adds 210.0 mL of a 2.68 x 10 M zinc oxalate (ZnC₂04) solution to a reaction flask. Calculate the micromoles of zinc oxalate the chemist has added to the flask. Round your answer to 3 significant digits.

A solution is made by dissolving 28.5 g of ammonium nitrite, NH4NO₂, in enough water to make exactly 250, m of solution. Calculate the molarity of each species: NH4NO₂ NH₂ NO₂

Write the net ionic equation for the following molecular equation. 3CuSO4(aq) + 2(NH4)3PO4(aq) —Cu3(PO4)2(s) + 3(NH4)₂SO4(aq)

Concentrated sulfuric acid (18.3 M) has a density of1.84 g/mL. (a) How many moles of H₂SO4 are in each milliliter of solution? (b) What is the mass % of H₂SO4 in the solution?

In one of his most critical studies on the nature of combustion, Lavoisier heated mercury(II) oxide and isolated elemental mercury and oxygen gas. If40.0 g of mercury(II) oxide is heated in a 502-mL vessel and 20.0% (by mass) decomposes, what is the pressure (in atm) of the oxygen that forms at 25.0°C? (Assume that the gas occupies the entire volume.)

Lead (II) nitrate reacts with excess sodium chloride. Predict the products, balance the equation and determine the number of moles of sodium chloride that are consumed during the reaction if 47.4 grams of precipitate are formed.

Circle the correct reaction that is coupled with the reaction below (Hint: it helps to draw them) dihydroxyacetone phosphate → glycerol-phosphate 1) FAD → FADH2 2) FADH2 → FAD 3) No oxidation/reduction occurs

An unknown weight of the aluminum sample (Al) was placed in the hydrobromic acid solution. The reaction was as follows: 2 Al (s) + 6 HBr (aq) -> 2 AlBr3 (s) + 3 H2(g) What was the mass of the Al sample (in grams) if a 14.4 L of the gas product of this reaction was collected at the temperature of 520.0°C and under the pressure of 741 mmHg? Molar masses (in g/mole): Al = 26.98; HCI=80.91; AICI3 = 266.69;H₂=2.00 Guiding questions: The temperature in K was The pressure in atm was The number of moles of gas was The mass of the Al sample was

A "dimer" forms when two of the same molecules combine (dimerize). Draw a Lewis structure for each of the substances below and indicate which are free radicals. For a free radical the unpaired electron goes on the least electronegative element, which is usually the central atom. C103 C103 CIO2 NO₂

How many grams of phosphorus (P4) are needed to completely consume 38.8 L of chlorine gas according to the following reaction at 25 °C and 1 atm? phosphorus (P4) (s) + chlorine (g) phosphorus trichloride (l)

4. Use the balanced equation given to solve the following problems. 2 KMnO4 + 16 HCl -> 5 Cl2 + 2 KCl + 2 MnCl2 + 8 H₂O b. How many moles of HCl are required to react with 35 grams of KMnO4?

Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.32 × 10^14 Hz (Hint: the speed of light = 3.00 x 10^8 m/s) 475 nm 190 nm 211 nm 385 nm

Why does Neiterkob's daughter most likely tell the myth "The Beginnings of the Maasai"? to entertain the reader with the fantastic setting of where the Maasai live to persuade the reader to adopt the Maasai's affection for the sky god to explain to the reader the origin of Maasai culture to impress the reader with the history of the Maasai

Give all possible values of l for a n=4 sublevel. 1, 2, 3, 4 0, 1, 2, 3 3 4 -2, -1, 0, 1, 2

Draw particle diagrams of the following: BeCl₂ (s) BeCl₂ (aq) Rb3AsO4(s) Rb3AsO4 (aq)

In which period of the periodic table do the elements have a "core-electron configuration" that is the same as argon. Fourth Third First Second

Which of the following gives the correct electronic configuration for the outermost energy level and subshell for the element tin? 4d6 5s² 40 4d8 5p²