Organic Chemistry Questions

A sample of krypton gas occupies a volume of 9.50 L at 67.0°C and 376 torr. If the volume of the gas sample is decreased to 7.66 L, while its temperature is increased to 118.0°C, the resulting gas pressure will be _ torr.

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.

What types of lipids have been used? triacylglycerols, glycerophospholipids sphingolipids, glycosphingolipids, waxes sphingolipids, steroids, prostaglandins waxes, triacylglycerols glycerophospholipids, sphingolipids

1.16 mol sample of oxygen gas at a temperature of 27.0 °C is found to occupy a volume of 26.6 liters. The pressure of this gas sample is _ mm Hg.

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.

In an alkyl halide, the halogen serves 2 functions that render the alkyl halide reactive towards substitution and elimination processes. One is that halgens serve as leaving groups and substitution/elimination reactions can only occur when a leaving group is present. What is the other reason? The halogens have pką values above zero, making them weaker acids and more likely to participate in dissolution. The halogen repels electron density rendering the adjacent carbon atom nucleophilic and therefore subject to attack by an electrophile. The halogen is usually in an allylic postion and therefore does not participate in resonance, making it less stable and more likely to react. The halogen withdraws electron density rendering the adjacent carbon atom electrophilic and therefore subject to attack by a nucleophile.

Calculate the number of different octapeptides you can make in which the amino acids phenylalanine, glycine, serine, leucine, histidine, proline, valine, and glutamine are each found. Enter your answer in the provided box.

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

What is the molarity of your group's sweet tea? (1 pt) Given the molecular structure of sugar is C₂H₂O, write out your need to create the molarity concentration that your group equation for molarity is: M = (4 pts: 2 pts for work, 2 pts calculation has been assigned for answer) for how many grams of sugar you will for 175 mL of water. Remember, the

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

A sample of oxygen gas at a pressure of 797 mm Hg and a temperature of 66 °C, occupies a volume of 12.6 liters. If the gas is cooled at constant pressure to a temperature of 28 °C, the volume of the gas sample will be _ L.

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 9.13 gram sample of krypton gas has a volume of 854 milliliters at a pressure of 3.39 atm. The temperature of the Kr gas sample is °C.

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

1.38 mol sample of helium gas at a temperature of 27.0 °C is found to occupy a volume of 26.7 liters. The pressure of this gas sample is

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)

The concept of determining which reactant is limiting and which is in excess is akin to determining the number of sandwiches that can be made from a set number of ingredients. Assuming that a cheese sandwich consists of 2 slices of bread and 3 slices of cheese, determine the number of whole cheese sandwiches that can be prepared from 44 slices of bread and 63 slices of cheese. number of sandwiches:

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 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 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, 15.3 grams of sulfur are allowed to react with 20.5 grams of carbon monoxide. sulfur (s) carbon monoxide (g) ---> sulfur dioxide (g) + carbon (s) What is the maximum amount of sulfur dioxide 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, 26.4 grams of hydrochloric acid are allowed to react with 66.4 grams of barium hydroxide. hydrochloric acid (aq) + barium hydroxide (aq) → barium chloride (aq) + water (l) What is the maximum amount of barium chloride that can be formed? What is the FORMULA for the limiting reagent? What amount of the excess reagent remains after the reaction is complete?

Read the following lines from Chapter 2 of Oliver Twist by Charles Dickens. 'Please, sir, I want some more.' The master was a fat, healthy man; but he turned very pale. He gazed in stupefied astonishment on the small rebel for some seconds, and then clung for support to the copper. The assistants were paralysed with wonder; the boys with fear. 'What!' said the master at length, in a faint voice. What do you understand about the situation from the dialogue? Ecstatic Shocking and Tense Calm

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 this reaction, 24.9 g iron reacts with 6.05 g oxygen gas. iron (s) + oxygen (g) ---> iron(II) oxide (s) What is the maximum mass of iron(II) oxide that can be formed? What is the FORMULA for the limiting reagent? What mass 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?

For the following reaction, 0.122 moles of bromine are mixed with 0.120 moles of chlorine gas. bromine(g) + chlorine(g) → bromine monochloride (g) What is the formula for the limiting reagent? What is the maximum amount of bromine monochloride that can be produced?

For the following reaction, 2.99 grams of methane (CHA) are allowed to react with 32.4 grams of carbon tetrachloride. methane (CH4)(g) + carbon tetrachloride (g) ---> dichloromethane (CH₂Cl₂)(g) What is the maximum mass of dichloromethane (CH₂Cl₂) that can be formed? What is the FORMULA for the limiting reagent? What mass of the excess reagent remains after the reaction is complete?

According to the following reaction, how many moles of bromine monochloride will be formed upon the complete reaction of 0.188 moles bromine with excess chlorine gas? bromine (g) + chlorine (g) ---> bromine monochloride (g) moles bromine monochloride

The theoretical yield of a reaction is the amount of product obtained if the limiting reactant is completely converted to product. Consider the reaction: 2 CO(g) + O₂(g) → 2 CO₂(g) If 9.810 g CO is mixed with 11.82 g O₂, calculate the theoretical yield (g) of CO₂ produced by the reaction.

An iron nail rusts when exposed to oxygen. For the following reaction, 4.26 grams of oxygen gas are mixed with excess iron. The reaction yields 12.2 grams of iron(III) oxide. iron (s) + oxygen (g) ---> iron(III) oxide (s) What is the theoretical yield of iron(III) oxide ? What is the percent yield for this reaction ?

For the following reaction, 11.9 grams of nitrogen monoxide are allowed to react with 11.3 grams of oxygen gas. nitrogen monoxide(g) + oxygen(g) ---> nitrogen dioxide (g) What is the maximum mass of nitrogen dioxide that can be formed? What is the FORMULA for the limiting reagent? What mass of the excess reagent remains after the reaction is complete?

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.

Lin Zexu was the driving force behind the Meiji restoration. in charge of stopping the opium trade in China. a leader of the Self-Strengthening Movement. the leader of the Taiping rebellion. the last Qing emperor in China.

What are some functions of lipids in the body? Check all that apply. protection for organs transport of CO2 an important component of cell membranes transport of oxygen to provide energy insulation for organs

For the following reaction, 11.2 grams of glucose (C6H12O6) are allowed to react with 15.7 grams of oxygen gas. glucose (C6H12O6)(s) + oxygen(g) → carbon dioxide(g) + water(l) What is the maximum amount of carbon dioxide 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, 47.2 grams of potassium hydrogen sulfate are allowed to react with 17.5 grams of potassium hydroxide. potassium hydrogen sulfate (aq) + potassium hydroxide (aq) ---> potassium sulfate (aq) + water (l) What is the maximum amount of potassium 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?