General organic chemistry Questions and Answers

Study "Gerunds as Objects of Preposition" on page 147 first. Which of these sentences with a gerund correct? A) You have succeeded learning grammar. B) You should take advantage in working with a tutor. C) Are you afraid of do yoga? D) I am interested in learning more about meditating.

Which of these sentences contains a GERUND? A) I am not sleeping well right now. B) Sleeping with a light on isn't a great idea. C) I have been sleeping much better lately. D) It's important to sleep in a dark room.

Give the electron configurations for O and Ir using the short-hand, noble gas method. For example, the electron configuration 1s22s22p63s23p2 (for silicon) is [Ne]3s2 3p². HOW DO WE GET THERE? Give the electron configuration for O using the short hand, noble gas method.

Sort the agents according to the way they disrupt the structure of proteins: denaturation or hydrolysis. Drag each item to the appropriate bin. View Available Hint(s) Denaturation mechanical agitation weak acid or base heavy metal ions heat isopropyl alcohol pepsin or trypsin Hydrolysis

Which of the following statements are true with respect to enzyme activity? Check all that apply. Enzymes speed up the reaction rate. Enzyme reactivity is not affected by change in pH and temperature. The activation energy of a reaction increases when an enzyme is used to catalyze the reaction. Enzymes affect the reaction pathway by forming an enzyme-substrate complex. Enzymes are regenerated when the reaction is completed.

You have added an irreversible inhibitor to a sample of enzyme and substrate. At this point, the reaction has stopped completely. What is the best way to get the activity of the enzyme back up? Removing the irreversible inhibitor should get the reaction working again. The enzyme is inactive at this point. Nothing can be done except add new enzyme. Adding more substrate will increase the rate of reaction. Adding more inhibitor should get the reaction up to speed again.

In determining the density of a rectangular metal bar, a student made the following measurements: length, 8.53 cm; width, 2.4 cm; height, 1.0 cm; mass, 52.7064 g. Calculate the density of the metal to the correct number of significant figures.

In terms of electrons, what is an excited state? Give an example of an electron configuration for an excited state. An excited state is when an electron temporarily occupies an energy state greater than its ground state.

Classify the solutes in each of the following equations as a weak electrolyte, a strong electrolyte, or a nonelectrolyte in water: a. XY₂ (s) → X²+ (aq) + 2Y (aq) b. HX (g) XYZ (s) → XYZ (aq) C. d. YOH (s)→Y (aq) + OH(aq) H(aq) + X¯ (aq)

(R)-6-iodo-3-isopropylnon-1-ene Draw the molecule on the canvas by choosing buttons from the Tools (for bonds and charges), Atoms, and Templates toolbars. Show the app the dashed or wedged buttons and then clicking a bond on the canvas.

Given the following equation: 8 Fe + S8 → 8 FeS What mass of iron, Fe, is needed to react with 16.0 moles of sulfur, S8? How many moles of iron, Fe, are reacted to form 16.0 grams of FeS (87.91 g/mol)?

Which of the following is not equal to 120 centimeters? 0.0012 kilometers (km) 0.012 dekameters (dkm) 1200 millimeters (mm) 1.2 meters (m)

Melting point can be defined as the temperature when a solid becomes a liquid. The melting point of the chemical methane is -182°C. Which state of matter would you expect to exist for methane at a temperature of -181°C? gas plasma liquid solid

Mr. Fluffinutter is working on his sicence experiments and calculates the molar mass of P2O5 to be 46.973 g/mol to check his answer he asks google the molar mass of P2O5 Google tells Mr. Fluffinutter that the molar mass of P2O5 is 283.886 g/mol. Both google and Mr. Fluffinutter have failed to calculate the correct molar mass of of P2O5. Explain what Mr. Fluffinutter did wrong in his calculation, what is the correct molar mass of P205 ?

Based on your lab report, provide the chemical reaction that occurs in Benedict's test for the following molecule. (Hint: Concentrate on the head of the molecule). ---- Files uploaded sideways or upside down may not be graded.

A saline solution used in intravenous drips for patients who cannot take oral fluids contains 0.92% (w/v) NaCl in water. How many grams of NaCl are contained in 5755 mL of this solution? A. 5.3 g NaCl B. 1.6 g NaCl C. 529 g NaCl D. 0.016 g NaCl E. 53 g NaCl

Give the major substitution product of the following reaction. CH3CH₂Br CH3OH CH3CH₂OH CH3CH2NH2 CH3CH₂O₂CCH3 CH3CH₂SCH 3 CH3CH₂CH3 There is no reaction under these conditions or the correct product is not listed here.

Which one of the following is not equal to 100 meters? 10,000 centimeters 10 hectometers 100,000 millimeters 0.100 kilometers

1. Section Question: What do elements in Period 3 all have in common? Their atoms have the same number of valence electrons. Their atoms have the same number of electron shells. Their atoms have the same properties. None of the above.

A weather balloon has a volume of 3.9 L at ground level, where the pressure is 1.0 atm. What would be the volume of the balloon once the pressure drops to 0.88 atm in the troposphere? (assume all other variables remain the same)

A 0.734-g sample of an unknown gas has a volume of 739 mL. and a pressure of 569 mmHg at 31.7 °C, Calculate the molar mass of this compound.

Draw all resonance structures of the following carbanion and carbocation. Be sure to include the initial structure in your answer as well. Draw the molecules on the canvas by choosing buttons from the Tools (for bonds and charges), A toolbars.

In a particular experiment at 300 °C, [NO2] drops from 0.0270 to 0.00821 M in 268 s. The rate of disappearance of NO₂ for this period is _ M/s. 1.40×10-4 -1.31x10-4 1.43x104 3.51x10-5 7.01x10-5

A balloon holds 39.8 kg of helium. What is the volume of the balloon if the pressure is 1.25 atm and the temperature is 25 °C?

Draw a Lewis structure for nitrogen pentoxide (N₂O5) in which each N is bonded to three O atoms. Be sure to include all lone pair electrons and nonzero formal charges. (Hint: None of the oxygen atoms are bonded to each other.)

A 1.80 gram sample of helium gas has a volume of 933 milliliters at a pressure of 3.77 atm. The temperature of the He gas sample is

A sample of helium gas at a pressure of 995 mm Hg and a temperature of 67 °C, occupies a volume of 14.7 liters. If the gas is cooled at constant pressure to a temperature of 20 °C, the volume of the gas sample will be

For each of the following sets of pressure/volume data, calculate the missing quantity. Assume that the temperature and the amount of gas remain constant. a. V = 18.7 L at 101.1 kPa 19.0 L at ? kPa b. V = 27.7 mL at 752 torr ? mL at 768 mm Hg mL c. V = 60.0 L at 1.09 atm V = ? L at 116.6 kPa

An automobile tire is inflated to a pressure of 28.3 psi. Express this pressure in atmospheres, kilopascals, inches Hg, millimeters Hg and torr.

A sample of neon gas collected at a pressure of 0.795 atm and a temperature of 301 K is found to occupy a volume of 500. milliliters. How many moles of Ne gas are in the sample?

A sample of helium gas at 307 K and 0.977 atm occupies a volume of 4.55 L. If the gas is compressed into a smaller volume, while at the same time it is heated to a higher temperature, the final gas pressure could be higher or lower than 0.977 atm depending on the final volume and temperature. will be lower than 0.977 atm. will be higher than 0.977 atm.

What is the proper dissociation equation for nitrous acid (HNO₂), a weak electrolyte. a. HNO₂ →H + N³- +20²- b. HNO₂ H+N³- +20²- c. HNO₂ → 2H* + NO²- d. HNO₂ →H +NO₂- e. HNO₂ -->H+ + NO₂-

Which choice is properly identifies a conjugate pair in the equation below? H₂O (l) + HS- (aq) OH (aq) + H₂S (aq) ACID: H₂O ACID: HS- ACID: H₂O CONJUGATE BASE: HS- ACID: H₂S CONJUGATE BASE: H₂S CONJUGATE BASE: OH- ACID: OH CONJUGATE BASE: H₂S CONJUGATE BASE: H₂O

If 25.0mL of 0.33M sulfuric acid (H₂SO4) is required to neutralize 41.5mL of lithium hydroxide (LiOH), what is the concentration of the base? 0.10M 0.27M 0.33M 0.40M 1.10M

Show the products of the following acetylide alkylation reactions. (Make sure your product has the correct number of carbons.) Draw the molecule on the canvas by choosing buttons from the Tools (for bonds and charges),

What is the proper name for the molecule N₂O10? a. Decoxygen Tetranitride b. Nitrogen Decoxide c. Tetranitride Oxide d. Tetranitrogen Decoxide e. Nitrogen (IV) Oxide

A sample of oxygen gas collected at a pressure of 1.16 atm and a temperature of 27.0 °C is found to occupy a volume of 26.6 liters. How many moles of O₂ gas are in the sample?

For the reaction below, determine how the reaction rate would be effected based changes. 2Na(s)+ZnF₂(aq) → 2NaF(aq) + Zn(s) Addition of more sodium (Na). Removal of some zinc (Zn). Placing reaction in an ice bath. Addition of a catalyst. Removal of some zinc fluoride (ZnF2). Increased Reaction Rate No Change in Reaction Rate Decreased Reaction Rate

The elemental analysis of an unknown compound is 57.9 % C, 3.61 % H, and 38.5 % O. The molar mass of this compound is 166 g/mol. Determine the molecular formula of this compound. A CSH6O4 B. C₂H302 C. C₂H₂0₂ D. C8H604 E. C9 H 10O 3

In 1973, Caine and Tuller reported a synthesis of racemic oplapanone, a sesquiterpene isolated from Oplopanax japonicus (a deciduous shrub) involving a reaction we learned in this chapter. Predict the product of the reaction shown. (Caine, D.; Tuller, F. N. J. Org. Chem. 1973, 38, 3663.)

What are the products of the reaction between hydrofluoric acid (HF) and strontium carbonate (SrCO3)? Hydrogen Gas (H₂) & Strontium Fluoride (SrF₂). Hydrogen Gas (H₂) & Strontium Fluoride (SrF2) & Carbon Dioxide (CO₂). Water (H₂O) & Strontium Fluoride (SrF2). Water (H₂O) & Strontium Fluoride (SrF₂) & Carbon Dioxide (CO₂). Hydrogen Gas (H₂) & Strontium Fluoride (SrF2₂) & Water (H₂O).

A solution has an [OH-] of 4.5 x 10-8M. Determine the concentration of hydronium (H3O+) ions in the solution and if the solution is acidic, basic or neutral. 4.5 x 10-22M & Basic 2.2 x 10-7M & Basic 2.2 x 10-7M & Acidic 4.5 x 106 M & Basic 4.5 x 106 M & Acidic

Calculate the number of milliliters of 0.687 M KOH required to precipitate all of the Co²+ ions in 117 mL of 0.732 M Co(NO3)2 solution as Co(OH)2. The equation for the reaction is: Co(NO3)₂(aq) + 2KOH(aq) ---> Co(OH)₂(s) + 2KNO3(aq)

D-Erythrose is aldotetrose; it is probably the major component in erythrocytes. D- erythrose; it has one of the following characteristics: 1. It is poly hydroxy aldehyde. 2. It is poly hydroxy ketone. 3. It is poly hydroxy acid. 4. It is poly hydroxy amine. 5. None of the above.

How many milliliters of a 0.455 M NaOH solution are needed to completely saponify 13.5 g of glyceryl tristearate (tristearin)? Express your answer with the appropriate units.

For the following reaction, 41.7 grams of iron are allowed to react with 15.9 grams of oxygen gas. iron (s) oxygen (g) ---> iron(III) oxide (s) What is the maximum amount of iron(III) oxide that can be formed? What is the FORMULA for the limiting reagent? What amount of the excess reagent remains after the reaction is complete?

For the following reaction, 73.1 grams of barium chloride are allowed to react with 65.1 grams of potassium sulfate. barium chloride (aq) + potassium sulfate (aq) ---> barium sulfate (s) + potassium chloride (aq) What is the maximum amount of barium sulfate that can be formed? What is the FORMULA for the limiting reagent? What amount of the excess reagent remains after the reaction is complete?

Nitrogen monoxide is produced by combustion in an automobile engine. For the following reaction, 3.85 grams of oxygen gas are mixed with excess nitrogen monoxide. The reaction yields 8.86 grams of nitrogen dioxide. nitrogen monoxide (g) + oxygen (g) -> nitrogen dioxide (g) What is the theoretical yield of nitrogen dioxide ? What is the percent yield for this reaction?

Draw the molecular orbital (MO) electron diagram for the N₂- molecular ion. Be sure your diagram contains all of the electrons in the ion, including any core electrons.

In our bodies, sugar is broken down with oxygen to produce water and carbon dioxide. For the following reaction, 0.257 moles of glucose (C6H12O6) are mixed with 0.521 moles of oxygen gas. glucose (C6H12O6) (s) + oxygen (g) → carbon dioxide(g) + water(l) What is the formula for the limiting reagent? What is the maximum amount of carbon dioxide that can be produced?