Organic Chemistry Questions

There are four isomers with the molecular formula C3H9N. Three of them are trimethylamine, N-methylethylamine, propylamine. Which is the fourth one? A. N-methylpropylamine B. Diethylamine C. Isopropylamine D.Cyclopropylamine

Explain how to write the abbreviated electron configuration for gallium (Ga), and provide the correct abbreviated electron configuration.

Use the model of butane, C4H10. Draw the Newman projection along the C2-C3 bond. Draw all of the staggered and eclipsed Newman conformer projections. Name each conformer. Build a model of hexane, C6H14. Draw the Newman projection along the C2-C3 bond. Draw a staggered and eclipsed Newman projections.

What functional group is shown here: CH3CH₂COOH A. alcohol B. carboxylic acid C. ketone D. aldehyde E. ether

Which of the following are key properties of carbon that are vital for the formation of organic compounds? Select all that apply. A. Four valance electrons B. The ability to bond to atoms of other elements C. The ability to form four bonds D. A mass number of 12

The ratio of n-factor of CuSO4 and KI in the following reaction is x and y respectively. The value of is, x/y is, 2CuSO4 + 4KI -> Cu₂l₂ + 2K₂SO4 +I2

What type of organic molecule would you expect CH3CH₂CH₂CH₂NH₂ to be based on the structural formula? A. Alcohol B. Amine C. Carboxylic acid D. Ester

A compound that contains only carbon, hydrogen, and oxygen is 39.12% C and 8.76% H by mass. What is the empirical formula of this substance? (Enter the elements in the order: C, H, O.)

What carbonyl compounds might you start with in a Grignard synthesis of the following 1-ethylcyclohexanol

number of carbon atoms, while acetylene has an even number of carbon atoms A reaction shows acetylene with SMILES string C#C to form pentanal with SMILES string CCCCC=O. The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagent(s) in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. A. O3:2) DMS B. R2BH; 2) H2O2, NaOH C. NaNH₂ D. H2, Lindlar's cat. E. 1-bromopentane F. H₂, Pt G. 1 - bromobutane H. H2SO4, H2O, HgSO4 I. EtBr I EtBr

A compound is found to contain 7.522 % phosphorus and 92.47% iodine by mass. The empirical formula for this compound is _____ The molar mass for this compound is 411.7 g/mol. The molecular formula for this compound is____

Name this compound: CH3COCH₂CH₂CH3 A. pentanol B. pentanone C. pentanal D. ethyl propyl ether E. propyl ethanoate

A compound contains only carbon, hydrogen, and oxygen. Combustion of 10.68 mg of the compound yields 15.48 mg CO₂ and 7.39 mg H₂O. The molar mass of the compound is 182.2 g/mol. What are the empirical and molecular formulas of the compound?

An alcohol is 68.84 % C and 4.962 % H by mass. The rest is oxygen. What is the empirical formula of the alcohol? Enter the elements in the order C, H, and then O.

An organic acid is composed of carbon (45.45%), hydrogen (6.12%), and oxygen (48.44%). Its molar mass is 132.12 g/mol. Determine the molecular formula of the compound.

A compound is found to contain 38.65 % carbon, 16.25 % hydrogen, and 45.09 % nitrogen by mass. What is the empirical formula for this compound?

how many degrees of unsaturation are present in each molecule below? 1. C₂H/Br3 2. C5H100 3. CsHsN

A hydrocarbon having molecular weight 70 gives a single monochloride on chlorination. The number of dichlorides formed on (including stereoisomers) chlorination of the hydrocarbon will be ____

If a 58.3 g sample of the liquid 1-iodoheptane has a volume of 42.3 mL, what is the density of the compound in g/mL? The liquid 1-iodoheptane is insoluble in water. If approximately equal volumes of water and 1- iodoheptane were mixed in a separatory funnel, would the water layer end up on the top or on the bottom? (Density of water is 1.00 g/mL.)

Bismuth oxide reacts with carbon to form bismuth metal. Bi2O3(s) + 3C(s)-> 2 Bi(s) + 3CO(g) When 0.234 mol of Bi2O3(s) reacts with excess carbon how many moles of Bi are formed? A. 0.234 mol B. 0.117 mol C. 2.00 mol D. 0.468 mol

List the following carboxylic acids in order from strongest acid to weakest acid: CH₂CH₂CH₂COOH Ka=1.52 x 10-5 CHỊCH,CHCOOH CI Ka=1.39 x 10-3 CICH₂CH₂CH₂COOH Ka=2.96 x 10-5 CH₂CHCH₂COOHCI Ka 8.9 x 10-5

Which is more electronegative, nitrogen or arsenic? Which is a stronger acid, NH3 or AsH3? Which is a stronger acid, CH3NH₂ or CH3 ASH₂?

What is the name of the compound with the formula PCIS? What is the name of the compound with the formula Cu3(PO4)2 ? What is the formula for carbon tetrabromide ? What is the formula for cobalt(III) sulfite?

Ethers can be prepared by reaction of an alkoxide or phenoxide ion with a primary alkyl halide. Draw the structure of the expected organic product of the reaction of 1-iodo-2-methylpropane with the following ● + • You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. Do not include lone pairs in your answer. They will not be considered in the grading. Do not include counter-ions, e.g., Na, I, in your answer. ● 0 Na

Consider the following reaction alc.KOH PH-CH-CH-CH, - CHÍ Br Identify the incorrect statement. OX is aromatic X is Ph-CH=CH-CH₂ - CH3 OY can be X (major) Ph- C = 0 OH Z can be CH3COOH 1.0 Y-Z 2.H₂O₂

Draw the structure of the organic product(s) of the reaction between (S)-3-methylhexan-2-one and phenylmagnesium bromide, followed by acidification. . Use the wedge/hash bond tools to indicate stereochemistry where it exists. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate multiple products using the + sign from the drop-down menu. .

An alcoholic compound (X) with 5 degrees of unsaturation gives C6H5CH = CH – CH = CH₂ on heating with conc. H₂SO4. The molar mass of (X) is M (in g/mol) (X contains only C, H and O). Then the value of is, (Report the 10 answer to the nearest integer)

The incorrect statement(s) about the products of the two parallel reactions is/are : The product P is meso (optically inactive) due to internal compensation. The product mixture Q is optically inactive. The product P is cis isomer The product Q is a racemic mixture of two enantionmers

O QH 0 H₂O+ OH Product can give positive test with :- → Product 2, 4 DNP, FeCl3, Cerric ammonium nitrate and NaHCO3 2, 4 DNP, FeCl3, NaOH and NaHCO3 FeCl3, Cerric ammonium nitrate, Tollen's reagent and NaHCO3 FeCl3, Cerric ammonium nitrate, NaOH and NaHCO3

From the table of reagents, select the reagents and conditions necessary to carry out the following reaction. 0²-0 a 9 OH Table of reagents a. NaBH, then H₂O* b. PBr3 c. Mg in dry ether, then CH₂-O, then H₂O* d. Dess-Martin Periodinane e. CH CH₂MgBr in dry ether, then H3O+ f. POCI3, pyridine

(CH3)2 CHCH (CH3) CH₂C (CH3) 3 Draw the molecule by placing atoms on the canvas and connecting them with bonds. Include all lone pairs of electrons.

What orbitals are used to form the 10 sigma bonds in propane (CH₂CH₂CH3)? Label each atom with the appropriate hybridization. Drag the appropriate labels to their respective targets. Note: not all labels will be used.

Which of the following is NOT true about the history of drug discovery? All early effective medicines were plant derived because plants were the only sources of small organic molecules. Quinine was used by the Romans as an antimalarial compound, the modern analog of which is chloroquine. The first drugs developed were rationally designed based on knowledge of the target. Sulfa drugs are still used clinically today.

A penny has a mass of 0.0027 kilograms and a volume of 0.53 milliliters. Set up the problem below and calculate the density of the penny in grams/milliliter. 0.0027 kg 0.53 mL g/mL Based on your calculation, will the penny float or sink in water? O

Specify the number of protons, neutrons, and electrons in the neutral atom copper-64. Enter your answers as integers separated by commas.

An ion from a given element has 25 protons and 23 electrons. What is the charge on the ion? Use the References to access important values if needed for this question. What is the name of the element? What is the symbol for the ion?

Ammonium formate NH4HCO₂, contains both ionic and covalent bonds. Draw the Lewis structure of this compound.

Which of the following statement is not correct regarding the major product of following reaction: CI Alc. KOH Major product Major product give optically inactive product mixture on reaction with Cl₂/CHCl3 O Total 6 isomers are possible having the molecular formula of major product Oxidation of major product with cold alkaline KMnO4 gives a MESO compound It has more melting point as compared to one of it's isomer.

Draw a stepwise mechanism for the following reaction:

For many purposes we can treat methane (CH4) as an ideal gas at temperatures above its boiling point of -161. °C. Suppose the temperature of a sample of methane gas is raised from - 12.0 °C to 15.0 °C, and at the same time the pressure is changed. If the nitial pressure was 0.66 kPa and the volume increased by 30.0%, what is the final pressure? Round your answer to 2 significant digits."

The synthesis above can be performed with some combination of the reagents listed below. Give the necessary reagents in the correct order, as a string of letters (without spaces or punctuation). Be sure to consider stereochemistry and regiochemistry. A. HBr B. Br2, CCl4 C. Br₂, light D. NaCCH E. HBr, ROOR F. NaNH2 G. Na, NH3 H. CH3CH₂Br

What kind of intermolecular forces act between a nitrosyl chloride (NOCI) molecule and a chlorine monofluoride molecule? Note: If there is more than one type of intermolecular force that acts, be sure to list them all, with a comma between the name of each force.

What role does the serine of the catalytic triad play in chymotrypsin? O it stabilizes the tetrahedral intermediate O it protonates the substrate O it acts as a nucleophile to attack the substrate O it contributes to substrate specificity

Boat and chair conformer of cyclohexane are free from angle strain but boat is still unstable than the chair form due to the Non-eclipsing interaction Staggered conformer of boat form Flag-pole repulsion Abnormal bond length

Which of the following best categorizes the idea that the rate of a reaction is dependent on temperature because the rate ultimately depends on the frequency of collisions between reacting species (atoms, molecules, etc.)? A) scientific law B) theory C) hypothesis D) observation

Which of the following choices correctly ranks the atomic radius in order from smallest to largest? (SC.912.P.8.5) Oa Ob Oc Od a. He, Mg, K b. Mg, K, He c. K, Mg, He d. K,He, Mg

A 50 mL sample of NaHCO3 and Na2CO3 is titrated with 12 mL, 0.2 M H₂SO4 using methyl orange indicator to reach end point. Another 50 mL of same sample solution needs 4 mL, 0.2 M H₂SO4 using phenolphthalein indicator. Ratio of m moles of NaHCO3 to Na₂CO3 in the sample is _______.

What isotope has 18 protons and 22 neutrons? Enter the name of the element followed by a hyphen and the mass number (e.g., uranium-234).

Choose the best definition for mass number. O Mass number is the mass of all protons in an atom. O Mass number is the sum of the number of neutrons and electrons for an atom. O Mass number is the sum of the number of protons and the number of neutrons for an atom. O Mass number is the mass of an atom.

After loading the liquid sample into your distillation apparatus, what else needs to be added to the round bottom flask before distillation can be performed?