Hydrocarbons Questions and Answers

What product s would you expect from the following reaction CH3 NBS Br CCl4 hv You do not have to consider stereochemistry If more than one structure fits the description draw them all Draw one structure per sketcher Add additional sketchers using the drop down menu in the bottom rig Separate structures with signs from the drop down menu

Determine the degrees of unsaturation for a molecule with a molecular formula of C5H7N₂OCI (1.5 points). Then draw a Lewis structures of the molecule that includes a Ring and an Aldehyde (3.5 points). All atoms must have a formal charge of ZERO. Include all atoms and lone pairs and draw proper bond angles. There are multiple correct answers.

Using an alcohol of no more than 4 carbon atoms as your only organic starting material (other inorganic materials such as Mg, PBr3, reducing reagents and oxidizing reagents all can be used), outline a synthesis route to the following molecule. Note: The alcohol can be used multiple times.

Fernando is doing his pre-lab homework for Chemistry. He is asked to predict how many grams of CO2 are produced if 2.09 mol of HCI are reacted according to this balanced chemical equation shown. CaCO3 + 2HCI → CaCl2 + CO2 + H2₂O He performs the following calculation. 1 mol CO₂ 2 metHCI 2.09 metHCT x X from the coefficients of the balanced equation 44.01 g CO₂ 1 mol CO₂ = 46.0 g CO₂ On the day of the lab his group obtains 43.1 grams of CO2 as their experimental result. What is their percent yield? round your answer to the tenths place, i.e. one decimal place

Starting with 2-bromobutane, which of the following reagents would you use to produce 1-butene as the major product? 1. 2. 3. 4. 1) CH₂CH₂ONA / CH₂CH₂OH 2) ((CH₂)CH)₂NLi / ether 3) CH₂SNa / acetone 4) CH₂CO₂Na/CH₂CO₂H

What coefficients would result in the below chemical equation being balanced? (The coefficients in the answers are written in the same order as they would be placed into the chemical equation.) Chemical Equation: _Al(s) + HCl(aq) --> ___AICI3(s) +___H2(g) 4,16,4,6 2,6,3,2 2,6,2,3 1,3,1,1 O2,3,1,1

M/ Ch. Hydrohalogenation involves the reaction of an alkene with which of the following? hydrogen a hydrogen halide a halogen water

1,2-Dichloropentane reacts with excess sodium amide in liquid ammonia (followed by water workup) to produce compound X. Com- pound X undergoes acid-catalyzed hydration to produce a ketone. Draw the structure of the ketone produced upon hydration of com- pound X.

A compound with molecular formula C6H₁0 gives three signals in its 1H NMR spectrum with the following integration values measured in mm: 13, 33, 73. a) How many protons are responsible for each signal? b) Deduce the structure of this compound.

Calculate the mass of butane needed to produce 96.0 g of carbon dioxide. Express your answer to three significant figures and include the appropriate units.

A sample of propane, C3H8, contains 17.9 moles of carbon atoms. How many total moles of atoms does the sample contain? Express the total number of moles of carbon and hydrogen numerically.

How many electrons are in energy level 3 of the following elements? a. argon b. carbon

Write the structural formula for the product that forms when 1-methylcyclopentene reacts with Br₂ in H₂O. Include stereochemistry in your answer. Draw only one enantiomer. Note: All structures should be drawn with no bonds between carbon and hydrogen.

How would adding lye (NaOH) to the sink drain remove the blockage? Adding NaOH will saponify lipids, forming glycerol and salts of the fatty acids that are soluble in water and would wash down the drain. Adding NaOH will saponify lipids, forming glycerol and salts of the fatty acids that are soluble in nonpolar organic solvents. Adding NaOH will decompose lipids, forming CO₂ and H₂O. Adding NaOH will saponify lipids, forming ethylene glycol and salts of the fatty acids that are soluble in water and would wash down the drain.

How does the structure of the peptide bond make the structure of proteins relatively rigid? Select the single best answer. The R groups on adjacent amino acids are on opposite sides of the extended peptide chain, adding to the rigidity. The double bond between carbon and oxygen restricts free rotation. The bond between hydrogen and nitrogen restricts free rotation. The partially double bonded character of the resonance structure restricts free rotation.

Compound X reacts with HI. The product of this reaction, when treated with KOH in ethanol, gives Y ( an isomer of X). Ozonolysis of Y (H₂O2 workup) produces two compounds: a two carbon carboxylic acid, and a four carbon ketone. What is X? A) 2-methyl-2-pentene B) 4-methyl-1-pentene C) 2,3-dimethyl-2-butene D) 3-methyl-1-pentene

The IUPAC name for this compound is A) N-ethylpropanamide. B) N-ethylacetamide. C) pentanamide. D) N,N-diethylacetamide. E) ethylpropionamide

Use the References to access important values needed for this question. Determine the molecular and empirical formulas for the substance shown in the ball-and-stick model below. Molecular Formula. Empirical Formula C = black H = gray

Using the average atomic masses for each of the following elements, calculate the number of atoms present in each of the following samples. a. 80.16 amu of calcium atom(s) b. 1471.2 amu of tungsten atom(s) c. 164.82 amu of manganese atom(s)

Predict the product(s) you would get when the following alkene reacts with H₂SO4 and H₂O: If you expect a racemic mixture, draw both enantiomers.

1. Draw structures for the products of the Diels-Alder reactions between a) 1,3-cyclopentadiene and maleic anhydride. b) 1,3-butadiene and trans-CH₂-CH=CH-CH=0. c) anthracene and HO₂C-C=C-CO₂H.

Add one or more curved arrows to show the movement of electrons in the reaction: To draw the arrows, select More in the drawing menu, then select the appropriate curved arrow. Click on a bond or electron to start a curved arrow. Do not start from an atom. Use the select tool to move the arrow head and tail to the desired placement. The curved arrow changes from red to black when appropriately placed.

Given the following reaction below, how many moles of H 20 can be formed from 0.03352 moles of C 6H 14? 12 CO 2 (g) + 14 H 20 (g) 2 C 6H 14 (g) + 19 O 2 (g) 0.004789 mol 2.315 mol 0.3185 mol 4.261 mol 0.2347 mol

Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default.

Draw the E isomer for CH3CH₂CH=CHCH3 Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default.

Describe how soap works in detail. What interactions are in play and between what?

Predict the major product of this organic reaction: CH3—CH=CH-CH3 + H2O -> H+ ?

What is the name of the compound with the formula MgSO3 ? What is the name of the compound with the formula KNO₂ ?

The structure below belongs to the class of organic compounds called.......and it's IUPAC name is CH3CH2CH2CCCH2CH3 A. Alkane; Dehydrogenated heptane B. Alkene; 4- Heptene C. Alkyne; 4- Heptyne D. Alkyne; 3- Heptyne E. Alkene; Hexene

13. Select the statement that is most true regarding kinetic and thermodynamic enolates. a. kinetic enolates are formed with a higher energy of activation under irreversible conditions relative to thermodynamic enolates. b. kinetic enolates are formed with a higher energy of activation under reversible conditions relative to thermodynamic enolates. c. kinetic enolates are formed with a lower energy of activation under reversible conditions relative to thermodynamic enolates. d. kinetic enolates are formed with a lower energy of activation under irreversible conditions relative to thermodynamic enolates.

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.

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.

Be sure to answer all parts. Write an expression for the equilibrium constant for the reaction. 2 NO(g) + O₂(g) = 2 NO₂(g)

If you pack a bag of potato chips for a snack on a plane ride, the bag appears to have inflated when you take it out to open. If the initial volume of air in the bag was 380 mL at 760 mm Hg, and the plane is pressurized at 630 mm Hg, what is the final volume (in mL) of the bag? The temperature and the number of gas particles do not change.

How many moles of solute are contained in each solution? a. 240 mL of a 0.34 M NaNO3 solution: b. 79 mL of a 2.2 M HNO3 solution: c. 6.9 L of a 4.9 M HCl solution:

If we compare a mole of carbon atoms to a mole of oxygen atoms, which sample will contain more atoms? Select the correct answer below: the carbon sample the oxygen sample they will contain the same number of atoms impossible to tell |||

A 10.0 g sample of a compound is found to contain 1.00 g carbon, 0.840 g hydrogen, and 8.16 g chlorine. What is the compound's percent composition? Select the correct answer below: 19.4% carbon, 31.9% hydrogen, 48.7% chlorine 51.0% carbon, 22.7% hydrogen, 26.3% chlorine 1.00% carbon, 0.840% hydrogen, 8.16% chlorine 10.0% carbon, 8.40% hydrogen, 81.6% chlorine

Free radicals are defined as (A) with (B) one unpaired electron. A: molecules B: at least A: atoms B: at least A: molecules or atoms B: at least A: ions, molecules, or atoms B: at least A: ions B: at most A: molecules or ions B: at least A: molecules, atoms, or ions B: at most

Free radical are in general, compared to non-radicals. low in energy, unreactive, and stable. low in energy, reactive, and unstable. high in energy, reactive, and unstable. high in energy, reactive, and stable. high in energy, unreactive, and unstable.

How many grams of lead(II) chloride is produced if 13.87 g lead(II) nitrate combines with excess hydrochloric acid to produce lead(II) chloride and nitric acid? Pb(NO3)2 + HCI -> PbCl2 + HNO3 [unbalanced] 11.64 g 14.33 g 0.086 g 16.52 g 5.82 g

1.49 moles of hydrogen gas are reacted with excess carbon monoxide according to the reaction below. If 15.5 grams of methanol (CH₂OH) are produced, what was the percent yield? 2 H₂(g) + CO(g) → CH₃OH(l) (A) 59.1 % (B) 64.9 % (C) 68.5 % (D) 72.3 % (E) 79.19% (F) 45.9 %

The reaction of CH3CH=CH-CH=CH₂ with excess bromine gives chiefly a. 1,2-dibromo-3-pentene b. 3,4-dibromo-1-pentene C. 1,4-dibromo-2-pentene d. a mixture of the above three compounds e. none of the above three compounds

Acetylene (C₂H₂) gas is often used in welding torches because of the very high heat produced when it reacts with oxygen (O₂) gas, producing carbon dioxide gas and water vapor. Calculate the moles of acetylene needed to produce 0.075 mol of carbon dioxide. Be sure your answer has a unit symbol necessary, and round it to the correct number of significant digits.

Which of the following pairs can be used to illustrate the law of multiple proportions? CO and CaCO3 H₂SO4 and H₂S KCl and KClO₂ H₂O and C12H22O11 SO and SO₂

Write an expression for the equilibrium constant for the reaction. CH₄(g) +2 Br₂(g) = CH₂Br₂(g) + 2HBr(g) K=

Treatment with O₃, followed by dimethyl sulfide (DMS), converts a trans-disubstituted alkene into a(n) 1. primary alcohol and aldehyde 2. allylic alcohol and ketone 3. secondary alcohol and carbon dioxide 4. tertiary alcohol and carboxylic acid 5. aldehyde and aldehyde 6. ketone and ketone 7. aldehyde and carbon dioxide

A sample of oxygen gas is collected over water at 22°C and 98.67 kPa pressure. If the partial pressure of the water is 2.67 kPa, the partial pressure of the oxygen is - 96.00 kPa 101.33 kPa 98.66 kPa 93.33 kPa

You find an unknown liquid and determine that it has a density of 4.9 g/mL. Assume you fill a 820.0 mL container with this substance and are wondering how heavy it will be. What is the mass (in kilograms) of the liquid in the container, assuming it is filled to exactly 820.0 mL?

Malonic acid is used in the manufacture of sleeping pills. A 5.500 g sample of malonic acid contains 1.904 g of carbon, 0.2131 g of hydrogen and the remainder is oxygen. Determine the empirical formula for malonic acid.

According to the following balanced equation, the reaction of one mole of potassium permanganate would result in the production of how many moles of water? 16 HCI +2 KMnO4 --> 2 KCI + 2 MnCl₂ + 5 Cl₂ + 8 H₂O