Organic Chemistry Questions

Which of the following is the first step in the Gabriel synthesis of primary amines? Deprotonation of phthalimide. Nucleophilic substitution. Hydrolysis of the phthalimide derivative. Deprotonation of the ammonium salt.

Ideal Gas Law Practice Problems Use the ideal gas law, PV = nRT and the universal gas law constant to solve the following problems. Remember your temperature must be in Kelvin and round your final answer to significant figures. If pressure unit is in atm, use: If pressure unit is kPa, use: R = 0.0821 L x atm / K x mol R = 8.31 kPax L K x mol 1. If I have 3 moles of a gas at pressure of 2.3 atm and a volume of 11 liters, what is the temperature? 2. If I have a gas at a pressure of 1.4 atm, a volume of 38 liters and a temperature of 84 degrees Celsius, how many moles of gas do I have?

Use the ideal gas law, PV = nRT and the universal gas law constant to solve the following problems. Remember your temperature must be in Kelvin and round your final answer to significant figures. If pressure unit is in atm, use: If pressure unit is kPa, use: R = 0.0821 L x atm /Kx mol R = 8.31 kPax L K x mol 1. If I have 3 moles of a gas at pressure of 2.3 atm and a volume of 11 liters, what is the temperature?

18.33 Draw both products that are obtained when 4-chloro-2-methyltoluene is treated with NaNH, followed by treatment with H₂O*. 18.34 Starting with benzene and using any other necessary reagents of your hair

The lines in the line spectrum of an atom results from energy absorbed by electrons dropping back down to a lower energy level energy absorbed by electrons jumping to a higher energy level energy released by electrons jumping to a higher energy level energy released by electrons dropping back down to a lower energy level none of the above

A gas mixture contains 237 kPa of sulfur dioxide and 125 kPa of carbon dioxide. What is the total pressure of the mixture? Select the correct answer below: 2.96 x 104 kPa 237 kPa 112 kPa 362 kPa

According to VSEPR theory, molecules adjust their shapes to keep which of the following as far apart as possible? pairs of valence electrons inner shell electrons bonding pairs of electrons mobile electrons lone pairs of electrons

A cube of aluminum at 15.4 °C is submerged into water that is 98.2 °C. In this situation, heat will be transferred from the aluminum to the water. True False

An expandable container contains 1.25 grams of helium. What is its volume (in L) when it has a pressure of 0.955 atm and a temperature of 22°C? Report your answer to the correct number of significant figures. Show your work here or on a separate sheet of paper to receive full credit for your answer.

Intermolecular forces are Forces within covalent molecules that hold them together Electrostatic forces between ions Bonds between hydrogen and oxygen atoms in water molecules Attractive forces between separate molecules Covalent bonds within a network solid

What does the term "dry" gas pressure refer to when a gas sample is collected over water? Select the correct answer below: Atmospheric pressure Vapor pressure of water Total pressure of the pure gas plus the water vapor pressure Pressure of the pure gas

What made scientists first believe that atoms contain equal numbers of protons and electrons? most alpha particles went straight through the gold foil some alpha particles were deflected by the gold foil the line spectra of excited atoms atoms are electrically neutral two of the above

For this question you will need to draw the VSEPR diagram of CH₂O. You will also need to list the number of bonding pairs and lone pairs on the central atom as well as including the name of the shape of the molecule. You need to show all of your work. This includes the valence electrons calculations, and drawings of what the molecules looks like as you are adding electrons and creating bonds. You should include at least 3 diagrams showing the progression of your molecule. Please take a picture of your drawings and calculations and upload it to the "Unit 1 - Test" dropbox within 5 minutes of finishing the test.

A sample of oxygen collected over water at a temperature of 29.0 °C exerts a pressure of 764 torr has a volume of 0.560 L. What is the dry gas pressure of the oxygen? (The vapor pressure of water at 29.0 °C is 30 torr.) Select the correct answer below: 730 torr 728 torr 734 torr 740 torr 9

Which of the following is the electron configuration for aluminum in the ground state? (The numbers after the letters are meant to be superscript) 1s2 2s2 2p5 3s1 3p1 1s2 2s2 2p6 3s2 3p1 1s2 2s2 2p6 3s1 3p2 1s2 2s2 2p6 3s1 3p1 1s2 2s2 2p6

12. Marketing people typically have the following basic objectives to accomplish. Which one below is not one of them: a. Focus only on developing new markets. b. Maximize the sales of existing products in existing markets. c. Develop and sell new products. d. Provide the quality of service necessary for customers to be satisfied with their transactions and to continue doing business with the organization.

What do the 3s and 3p orbitals in the hydrogen atom have in common? Select all that apply. They are in the same principal shell. They are in the same subshell. They have the same energy. They have the same basic shape.

Which was an assumption Bohr made in his model? Select the correct answer below: Wavelengths have negative values. Energy values were quantized. Neutrons are negatively charged. Electrons are found in the nucleus.

6 #1 - List the 3 types of intramolecular forces. Place the forces in order from strongest to weakest (I.e., #1 is the strongest; #3 is the weakest). 3 pts #2 - List the 3 types of intermolecular forces. 3 pts #3 - Convert the following (show all math work for conversion): 847 mm Hg = ? kPa 5 pts

Which does NOT influence the bond dipole moment? Select the correct answer below: The electronegativity difference between the atoms in the bond. The magnitude of the partial charges on the atoms in the bond. The distance between the atoms in the bond. The bond dissociation energy of the bond.

A molecule has 9 valence electrons. What is true about its Lewis structure? Select the correct answer below: It will follow the octet rule. It will be an exception to the octet le because it is an odd electron molecule. It will be an exception to the octet rule because it has an electron deficient central atom. It will be an exception to the octet rule because it is hypervalent.

6. The following characteristic applies to which of the eight characteristics of success of sales: They can match up their product's benefits with the customer's needs. a. Use the Golden Rule of Selling b. Sales knowledge at M.D. level c. Excels at Strategic thinking d. Stamina for the challenge

What did classical physics predict about the structure of the atom? Select the correct answer below: Based on electrostatic attraction, the electrons are repelled by the protons in the nucleus. Based on electrostatic attraction, the electrons would spiral into the nucleus. Based on electrostatic attraction, the electrons were attracted to other electrons. Based on electrostatic attraction, atoms are inherently stable.

What is the electron-pair geometry and molecular structure of ammonia (NH₂)? Select the correct answer below: tetrahedral, tetrahedral tetrahedral, trigonal pyramidal trigonal pyramidal, tetrahedral trigonal pyramidal, bent

A molecule has a central atom from the fourth period. The central atom is bonded to five other atoms. What is true about this molecule's Lewis structure? Select the correct answer below: It will follow the octet rule. It will be an exception to the octet rule because it is an odd electron molecule. It will be an exception to the octet rule because it has an electron deficient central atom. It will be an exception to the octet rule because it is hypervalent.

Calculate the grams of aluminum hydroxide that will be produced if 86.865 grams of ammonium hydroxide react. Use the balanced chemical equation below. Al2(SO4)3(s) + 6NH4OH(aq) → 2Al(OH)3(s) + 3(NH4)₂SO4(aq) Write your answer with the correct number of significant figures, units and chemical formula.

Identify the type of transport described by each of the following: a. an ion moves from low to high concentration in the cell. b. carbon dioxide moves through a cell membrane.

16.Indicate whether each of the following statements describes primary, secondary, tertiary, or quaternary protein structure: a. Hydrophobic R groups seeking a nonpolar environment move toward the inside of the folded protein. b. An active protein contains four tertiary subunits. c. Valine replaces glutamate in the beta-chain. d. Protein chains of collagen form a triple helix.

.Draw the condensed structural formulas for each of the following peptides and give the three-letter and/or one-letter abbreviations: a. prolylaspartate b. threonylleucine c. methionylglutaminyllysine d. histidylglycylglutamylisoleucine

Which of the following statements are true? Select all that apply: Covalent bonding forms as a result of a transfer of electrons from one atom to another. Covalent bonding forms when two atoms share electrons between them. Covalent bonding typically forms between two metal atoms. Covalent bonding typically forms between two nonmetal atoms.

Using the Frost circle method (polygon method) provide an energy_diagram showing the relative energies of the molecular orbitals for the cyclopentadienyl anion. Clearly label and number each molecular orbital as bonding, nonbonding, antibonding (use *). Clearly show the nonbonding line and the ground state electron configuration.

Draw an example of each type of the following lipids: a. Fatty acid (saturated and unsaturated) b. Prostaglandin c. Wax d. Triacylglycerol (Fat and oil) e. Glycerophospholipid f. Sphingolipid g. Steroid

A 150-ml bottle of mouthwash contains 14 mL of ethanol. What is the volume/volume percent concentration of ethanol? % (v/v) ethanol

What does the equation represent? .Ca. → Ca²+ + 2e¯ Select the correct answer below: Anions are formed by gaining valence electrons. Anions are formed by losing valence electrons. Cations are formed by gaining valence electrons. Cations are formed by losing valence electrons.

How many milliliters of a 5.2 M NaCl solution would be needed to prepare each solution? a. 15 mL of a 0.17 M solution: b. 350 mL of a 0.039 M solution: mL mL

Hund's rule states that the electron configuration with the lowest-energy will have the maximum possible number of unpaired electrons. Which of the elements below would require special attention to this rule to correctly depict the orbital diagram? Select the correct answer below: H He N Be E

Calculate the molarity of each aqueous solution with the given amount of NaCl (molar mass 58.44 g/mol) and final volume. a. 2.60 mol in 0.920 L M b. 5.90 mol in 730. mL M c. 0.0920 mol in 8.90 mL M

Draw the condensed structural formula for the four amine isomers with the formula C3HgN. Write the common name and indicate whether they are primary, 1°, secondary, 2°, or tertiary, 3°, amines.

A chemist placed a 10.00 mL sample of HCI in a flask. The HCI was titrated with 0.100 M NaOH. The titration required 22.08 mL of NaOH to reach the equivalence point. What is the molarity of the HCI sample? 0.0221 M 0.00221 M 0.0453 M 0.221 M

Enter your answer in the provided box. What is the weight/volume percent concentration using the given amount of solute and total volume of solution? 67 g of NaNO3 in 250 mL of solution: % (w/v) NaNO3

3. Identify the limiting reactant and the theoretical yield of phosphorous acid if 3.00 mol of PCl3 is mixed with 3.00 mol of water. vnnnnn PC13 + H₂O H3PO, + HCI 4. In number 3, how much of the excess reactant is left over? What is the percent yield if only 58.7 g of H3PO3 is created?

Be sure to answer all parts. What is the molarity of a solution prepared using the given amount of solute and total volume of solution? a. 36.0 g of NaCl in 680 mL of solution: b. 46.0 g of NaHCO3 in 8.8 L of solution:

Circle and identify the functional groups in the following molecules...each molecule has 2 functional groups. (2 pts)

If the solubility of KCI in 100 mL of H₂O is 34 g at 20°C and 43 g at 50°C, label each of the following solutions as unsaturated, saturated, or supersaturated. If more solid is added than can dissolve in the solvent, assume that undissolved solid remains at the bottom of the flask. a. adding 14 g to 100 mL of H₂O at 20°C: (select) b. adding 42 g to 100 mL of H₂O at 50°C: (select) c. adding 17 g to 50 mL of H₂O at 20°C: (select) d. adding 38 g to 100 mL of H₂O at 50°C and slowly cooling to 20°C to give a clear solution with no precipitate: (select)

Be sure to answer all parts. What is the weight/volume percent concentration of a 31.0 % (w/v) solution of vitamin C after each of the following dilutions? a. 170. mL diluted to 490. mL: b. 0.39 L diluted to 860 mL:

Be sure to answer all parts. How many grams of NaCl are contained in each of the following volumes of a 1.23 M solution? b. 62 mL a. 0.24 L

Be sure to answer all parts. How many milliliters of a 4.8 M NaCl solution would be needed to prepare each solution? a. 85 mL of a 2.5 M solution: b. 170 mL of a 0.75 M solution: mL mL

Be sure to answer all parts. One gram (1.00 g) of vitamin B3 (niacin) is dissolved in water to give 15.0 mL of solution. (a) What is the weight/volume percent concentration of this solution? (b) What is the concentration of a solution formed by diluting 1.0 mL of this solution to each of the following volumes: [1] 16.0 mL; [2] 120 mL?

A drink sold in a health food store contains 2.50% (w/v) of vitamin C. What volume would you have to ingest to obtain 1,000. mg of vitamin C? mL solution

Enter your answer in the provided box. If a solution contains 240. mEq/L of Na*, how many milliequivalents of Nat are present in 440. mL of solution?