Organic Chemistry Questions

Give the formula for the conjugate base of each species:

A U.S. secret weapon in the Pacific campaign was its possession of the atomic bomb from 1941 on. its alliance with the Soviets. a code-breaking operation known as Magic. massive military aid from Korea and Vietnam. an almost three-to-one advantage in aircraft carriers.

PQ-21. Rank the molecules based on the relative intensity of their dipole moments from weakest to strongest. (A) CHCl3<CH₂Cl₂ <H₂O <CH3CH₂OH (B) CHCl3< CH₂Cl2 < CH3CH₂OH <H₂O (D) CH₂Cl₂ <CHCl3 < CH3CH₂OH <H₂O (C) CH₂Cl₂ <CHCl3<H₂O< CH3CH₂OH

Plants undergo photosynthesis in order to provide oxygen into the air, which is vital for the human body to stay alive: 6CO2 + 6 H₂O + light C6H12O6 + 6 O2 If there were 2.38x 10² g of H₂O and 18.6 moles of CO₂, how much C6H12O6 can be produced?

When comparing ¹HNMR and 13CNMR spectrum, they will differ in which of the following general aspects? ► View Available Hint(s) O Number of scans taken to produce the spectrum O standard used O Range of the spectrum O Splitting patterns O Integration O All are differences except the standard used.

Consider two gases, A and B, each in a 1.0-L container with both gases at the same temperature and pressure. The mass of gas A in the container is 0.34 g and the mass of gas B in the container is 0.48 g. (20points) a. Which gas sample has the most molecules present? Explain. b. Which gas sample has the largest average kinetic energy? Explain. c. Which gas sample has the fastest average velocity? Explain. d. How can the pressure in the two containers be equal to each other since the larger gas B molecules collide with the container walls more forcefully?

The rate of effusion of a particular gas was measured and found to be 24.0 mL/min. Under the same conditions, the rate of effusion of pure methane (CH4) gas is 47.8 mL/min. What is the molar mass of the unknown gas? (5points)

If the half-life of substance A is 0.5 years, how long would it take for 2 grams of substance A to remain given an initial mass of 16 grams? years Do not include units in your answer.

A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 362.0 Torr at 45.0 °C. Calculate the value of AHp for this liquid. AH= Calculate the normal boiling point of this liquid. boiling point: kJ/mol 'C

Calcium hydride combines with water according to the equation: CaH₂(s) + 2H₂O() → 2H₂(g) + Ca(OH)₂(s) Beginning with 84.0 g of CaH₂ and 42.0 g of H₂O, what volume of H₂ will be produced at 273 K and a pressure of 1327 torr?

For each reaction, write the chemical formulae of the oxidized reactants in the space provided. Write the chemical formulae of the reduced reactants in the space provided. FeSO (aq) + Mg(s) Fe(s) + MgSO (aq) 1 Pb (s) + Hg(NO3)₂(aq) → Hg(1) + Pb(NO3)₂(aq) 3 AgNO3(aq) + Al(s) 3 Ag(s) + Al(NO₂) (aq) 1 reactants 0 oxidized: 0 reactants reduced: reactants oxidized: reactants reduced: reactants oxidized: reactants reduced: 0 Ś ?

What is/are the name(s) of the product(s) of the reaction of D-Xylose with [1] NaCN, HCI [2] H2, Pd-BaSO4 [3] H3O? (Choose all correct answers) A. D-idose B. D-talose C. D-galactose D. D-gulose

If the pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.74, which of the following is TRUE? O [HCHO2] < <[NaCHO2] O [HCHO2] [HCHO2] O [NaCHO2] [NaCHO2] [HCHO2] [NaCHO2]

Provide the structure of the product which results when the alkene below is treated with O₂ followed by (CH3)2S. 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. Show the appropriate stereochemistry by choosing the dashed or wedged buttons and then clicking a bond on the canvas.

Courts that use a landmark case as precedent for a decision are using an earlier case as a guide. changing the previous case's decision. using a third party to review the case. sending the case to a higher court for review.

Calculate the volume in milliliters of a 0.876M zinc nitrate solution that contains 250. mmol of zinc nitrate digits. (Zn(NO₂)₂) Round your answer to 3 significant

A chemist makes 620. mL of potassium iodide (KI) working solution by adding distilled water to 30.0 mL of a 3.28 water. Calculate the concentration of the chemist's working solution. Round your answer to 3 significant digits. mol L mol L stock solution of potassium iodide in

A chemist has a block of aluminum metal (density is 2.7 g/mL). They drop the metal into a graduated cylinder containing water, and find the volume change is 2.3 mL. What is the mass of the block, in grams?

11.4 g of butane (58.12 g/mol) undergoes combustion according to the following equation. What pressure of carbon dioxide in atm is produced at 324 K in a 1.35 L flask. 2 C4H10 (9) + 13 O2 (g) →8 CO2 (g) + 10 H₂O (g)

QUESTION 14 The base sequence of the strand of DNA complementary to the segment -TGGCAAC- is A)-TGGCAAC- B)-ACCGTT G- C)-ACCGUUG- D)-UCCGTTG- E)-ACGCTUG- E C D B A

Classify each chemical reaction: NaOH(aq) + HBrO(aq) NaBro(aq) + H₂O(1) reaction 2CH, (CH₂), CH₂(g) + 130₂ (g) SCO, (g) + 10H₂O(g) KBr(aq) + AgNO, (aq) 6 1 KNO,(@g) + AgBr() KOH(aq) + HBrO, (ag) KBrO, (aq) + H₂O() type of reaction (check all that apply) combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition combination single replacement double replacement decomposition precipitation combustion acid-base precipitation combustion acid-base precipitation combustion acid-base precipitation combustion acid-base

A chemist adds 35.0 mL of a 0.191 mol/L barium chlorate (Ba(ClO3)2) solution to a reaction flask. Calculate the millimoles of barium chlorate the chemist has added to the flask. Round your answer to 3 significant digits.

Fill in the missing symbol in this nuclear chemical equation.

Using molarity to find solute moles and solution volume Calculate the volume in liters of a 5.11 x 10 mol/L copper(II) fluoride solution that contains 12.0 mol of copper(II) fluoride (CuF₂). Round your answer to 3 significant digits. 0 ☐ X Kyuse ob Ar S

How many moles of water are produced when 3.6 mol. sulfuric acid and excess potassium hydroxide are used in the reaction shown below? H₂SO4 + 2KOH → K₂SO4 + 2H₂O 3.6 mol. 1.8 mol. 2.0 mol. 7.2 mol.

A chemist must dilute 35.2 mL of 5.36 M aqueous zinc nitrate water to the solution until it reaches a certain final volume. Calculate this final volume, in milliliters. Round your answer to 3 significant digits. (Zn(NO3)₂) solution until the concentration falls to 2.00 M. He'll do this by adding distilled

Why is invert sugar sweeter than sucrose? Invert sugar is sweeter than sucrose because it is a 50-50 mixture of ribose and fructose, and fructose is much sweeter than sucrose. Invert sugar is sweeter than sucrose because it is more soluble than sucrose. Invert sugar is sweeter than sucrose because it is a 50-50 mixture of fructose and glucose, and fructose is much sweeter than sucrose. Invert sugar is sweeter than sucrose because

In a titration experiment in which a standard solution of hydrochloric acid is being added to a sodium hydroxide solution to determine the concentration of the sodium hydroxide solution, the end point is when The liquid in the burette is reduced to half of the original volume All of the standard hydrochloric acid solution is used up All of the liquid is the burette is used up All of the sodium hydroxide has reacted

Which statement is a postulate of the kinetic molecular theory of gases? O The pressure exerted by the gas is due to the gas particles sticking to the container walls. O The pressure exerted by the gas is due to the gas particles colliding with the container walls. O The pressure exerted by the gas is due to repulsions between the gas particles.

Using the reaction you just successfully chose in the last problem, assuming that you have 30.0 grams of solid magnesium and an excess amount of HCL how much magnesium chloride would you produce? The balanced equation is ► View Available Hint(s) 77 g MgCl₂ O 117 g MgCl₂ O 0.010 g MgCl O 1.23 g MgCl₂ Mg + 2HCl H₂ + MgCl₂

There are limitations to the amount of pressure that can be applied during reverse osmosis because of the physical nature of the membrane. A membrane has been developed that can withstand osmotic pressures, II, of up to 1.54x105 torr. Calculate the maximum molar concentration of a solution that can be purified by reverse osmosis using this membrane at 25 °C. Express your answer with the appropriate units.

Give an application for each of the following organic chemicals. (0.5 points each, 2 points total) 1. octane 2. methylaldehyde 3. ethanoic acid 4. propanone

How many moles of hydrogen gas would be needed to react with excess carbon dioxide to produce 88.1 moles of water vapor? Express your answer with the appropriate units. ▸ View Available Hint(s) 0 Value Units PIN ?

What is the percent yield of zinc nitrate when 4.02 moles silver nitrate is reacted with excess zinc chloride and 99.0g of zinc nitrate is produced. (Molar Mass of AgNO3 = 169.87g/mol; Molar Mass of Zn(NO3)2 = 189.36g/mol) ZnCl2 + 2AgNO3 → 2AgCl + Zn(NO3)2 28.9% 57.9% 52.0% 26.0%

Fill in the blank. s to TS 1. 2. When a stimulus activates its specific sensory receptor. The process of your brain interpreting all the stimuli at a given time fast or slowly. If they do so quickly, they are called 3. Receptors can either called receptors. E Phasic E Sense = Adapt = Tonic receptors, if they do so slowly, they are = Perceive Drag and drop the correct answers into the boxes. You can also click the correct answer, then the box where it should go. Reset my answers. 4

Classify each scenario according to the empirical gas law it exemplifies. Amonton's law Avogadro's law Answer Bank The pressure in William's basketball, which maintains a constant volume and has no leaks, decreases as the temperature decreases. Boyle's law pressure and temperature. Amadeo knows that he has twice as Amedeo has a 2 L balloon with He gas and a 1 L balloon with Ar gas, both at the many He atoms as Ar atoms. When Robert squeezes his balloon, he notes that its volume decreases but its pressure increases.

Match each variable to the corresponding scenario. number of moles of gas pressure temperature Steve buys a helium-filled balloon for his birthday in January, On his walk home, Steve notices the balloon seems deflated. He decides that it must be leaking, so he takes the balloon back into the store. While in line he realizes that the balloon is not leaking after all, and has returned to its original volume. In addition to volume, what variable changed during Steve's trip? Steve realizes that his racquetball no longer bounces well. Instead of buying a new one, he heats up the old one using a hair dryer. It now bounces even better than new, as long as it remains hot. In addition to temperature, what variable changed? Two balloons in a balloon bouquet have volumes of 2.24 L and 448 L, respectively. In addition to volume, what variable is different for the two balloons? A balloon containing helium gas has a pressure of 1 atm at ground level. As it rises, the pressure decreases by 50%, but the temperature remains constant. In addition to the pressure, what variable must have changed? Answer Bank volume

What functional group is shown here: CH3COCH3 ether carboxylic acid. alcohol ketone aldehyde

How much heat energy is required to convert 80.8 g of solid iron at 21 °C to liquid iron at 1538 °C? The molar heat of fusion of iron is 13.8 kJ/mol. Iron has a normal melting point of 1538 °C. The specific heat capacity of solid iron is 0.449 J/(g. *C).

1. Identify 2 possible sources of error. Explain how that source of error could effect your data. For example: If the bottle of acetone was left without the lid on for a long period of time, some of the acetone could evaporate. This would decrease the actual concentration of acetone in the bottle, while students still assume its 4.0 M. Because the true concentration of acetone would be lower, it could possibly slow down their reaction rate and effect their calculated rate. (Because I explained how concentration would effect the rate - you cannot discuss the effect of evaporated reagents - you cannot say if the concentration of iodine or HCI was lower than the true value!)

Draw a structural formula for the organic anion (i.e., do not include NH4) formed when ethanal is reacted with Tollens reagent. Don't forget the charge on the ion. . You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. Include all nonzero formal charges.

A sample of sodium reacts completely with 0.568 kg of chlorine, forming 936 g of sodium chloride. What mass of sodium reacted? Express your answer to three significant figures and include the appropriate units.

For the below, give the name of the functional group and the IUPAC name of the molecule: (0.5 point each, 5 points total) CH₂CHCH3 Functional group CH3CH₂NH2 Functional group CH3CCCH₂CH₂CH3 Functional group CH3CH₂COOH CH3CH2CHO CH3COCH₂CH3 Functional group Functional group CH₂OH Functional group CH3COOCH₂CH3 CH3CH₂CH3 Functional group alcohol Functional group CH₂CH₂CH₂CH₂OCH3 Functional group alkyl Functional group alkanes alkyl name name name name name name name methanol name ethyl ethanoate name name propane butane

1. Which of the following statements could describe a saturated fatty acid? a.Contains two double bonds in the carbon chain. b.Contains one double bond in the carbon chain. C.Contains a trans double bond in the carbon chain. d.Contains a cis double bond in the carbon chain. e.Contains all single bonds in the carbon chain.

Determine the empirical formula of an oxide for Silicon based on the following data. Mass of empty crucible and lid - 23.4428 g Mass of crucible, lid, and Silicon - 36.1028 g Mass of crucible, lid, and the oxide formed - 50.5271 g Show detailed calculations Format Table

Which of the following reactions would be classified as oxidation-reduction? Check all that apply. View Available Hint(s) 2Na(s) + Cl₂(g) →2NaCl(s) Na(s) + CuCl(aq)→NaCl(aq) + Cu(s) NaCN(aq)+CuCl(aq)—NaCl(aq)+CuCN(s)

Determine if the indicated species in question is oxidized or reduced from the partial or full reaction shown. (1 point each, 4 points total) Fe3+ in this reaction: Fe(3+) →→ Fe(2+) Mn in this reaction: Mn → Mn(4+) Solid copper in this reaction: Solid copper +02 → copper(1) oxide Hydrogen gas in this reaction: Hydrogen Water gas + Oxygen gas [Choose ] [Choose ] [Choose ] [Choose ] V

Draw a structural formula for the acetal formed when two molecules of methanol combine with one butanal molecule.

Which changes are evidence of a chemical reaction? Drag each item to the appropriate bin. ►View Available Hint(s) A beaker of water becomes cool to the touch upon adding a salt to it. Bubble formation on chalk added to acid Evidence Ethanol evaporating Reset Help Bubbles forming in a shaken water bottle Two cloudy solutions are mixed and become clear. Not evidence

Give the name of the missing organic reactant in the following reaction. CH₂0-404₂80 ? + 2 Ag(NH₂)₂2 + 3 OH - + 2 Ag+ 4 NH₂ + 2H₂O