General organic chemistry Questions and Answers

Change the following measurement to the appropriate SI unit. The final unit required is shown to the right of the answer box. Be sure to use correct significant figures. An automobile engine with a displacement of 3.27×10^2

Cyclopentene is treated with hydrogen gas (H₂) and a platinum catalyst to form the product cyclopentane. This reaction can be generally classified as what type of process? A) oxidation B) elimination C) addition D) substitution

In a hydrogenation reaction of an alkene, hydrogen atoms are added to a double bond to form an A) alkane B) alkene C) alkyne D) aromatic ring

In the name 2-chloropropane, what does the 2 represent? It tells you there are two (2) ways this compound could be drawn. Where on the parent the substituent is attached, so in this case the substituent is located on carbon 2. How many carbon atoms are in the parent chain, so in this case, there are 2 carbons. It tells you there are 2 substituents on the parent chain.

A proton and a neutron have the same mass but opposite charges. true false The mass of an electron is considerably smaller than that of a neutron. true false An atomic mass unit (amu) is a unit of length. true false By definition, 1 amu is equal to 1.6605 x 107-24 true false. The protons and neutrons of an atom are found in the nucleus. true false

How many significant figures are there in each of the following numbers? 69.326 0.063486 0.36 307.19

Classify the underlined property as chemical or physical: When aluminum foil is placed into liquid bromine a white solid forms. Plants use carbon dioxide from the air to produce oxygen. Iodine is a purple solid that melts at 114 °C.

You are driving 40. mi/h and take your eyes off the road for "just a second" (exactly one second). What distance (in feet) do you travel in this time?

Which of the following reaction conditions results in Markovnikov addition to an unsymmetric alkene? A) HBr B) HBr with peroxides C) Br₂ D) H₂ with Pd-C E) KMnO4 with NaOH

How much will it cost to purchase materials for a fence if 86 feet are needed and the fencing costs $41.74/yard? Set up the problem below and calculate the cost. Place your conversion factors in order such that "feet" cancels first.

In the laboratory a student finds that it takes 53.2 calories to increase the temperature of 14.4 grams of solid magnesium from 20.3 to 36.5 degrees Celsius. Based on these data, what is the specific heat of magnesium?

The liquid decane has a density of 0.727 g/mL at 25.0°C. If a 145 gram sample of this compound is needed, what volume of the liquid at 25.0°C must be provided?

In the winter, a heated home in the Northeast might be maintained at a temperature of 69°F. What is this temperature on the Celsius and Kelvin scales?

Explain why it is important to follow the steps in order and use the proper materials. Use details from the text to support your answer.

Name these elements (try not to look at a Periodic Table): Ar bi Ca Na

The melting point of an unknown solid is determined to be 41°C. What is this temperature on the Fahrenheit and Kelvin scales?

You have a 100.0-mL graduated cylinder containing 50.0 mL of water. You carefully place a 178-g piece of brass (density = 8.56 g/mL) into the water. What is the final volume reading in the graduated cylinder?

Anna Karenina tells the stories of Anna and Levin. Both the stories run parallel. Which narrative technique is adopted in Anna Karenina? Use secondary subplot Multiple plot lines Reflection Description

Given that hydrogen carbonate ion, HCO3(aq), has a K₂ of 4.8 x 10-11, which of the following is the K, for the carbonate ion, CO3² (aq)? a) 2.1 x 10-4 b) 4.8 x 10-11 c) 1.0 x 10-14 d) 1.0 x 10-7

Write each of the following numbers to 3 significant figures in exponential or scientific notation. Write each number with only one non-zero digit before the decimal point. 718 0.00637 0.0519 7310

Eucalyptus leaves are the food source for panda bears. Eucalyptol is an oil found in these leaves. Analysis of eucalyptol indicates it has a molar mass of 154 g/mol and contains 77.87% C, 11.76% H, and 10.37% O. Determine the molecular formula of eucalyptol.

The boiling point of a liquid is found to be 295 K. What is this temperature on the Celsius and Fahrenheit scales? Temperature = Temperature =

A nickel is found to have a mass of 4.95 g. Using unit analysis, show what the mass of this nickel is in kg.

The liquid 3-chloro-1,1,1-trifluoropropane has a density of 1.33 g/mL at 20.0 °C. If a 64.7 mL sample of this compound is provided, what is the mass of the liquid at 20.0 °C that must be provided?

A slice of cheese has a mass of 18 g and a volume of 17 cm³. What is the density of the cheese in units of g/cm³ and g/mL?

1. How many MOLES of sulfur hexafluoride are present in 1.35 grams of this compound? 2. How many GRAMS of sulfur hexafluoride are present in 2.04 moles of this compound?

Which of the following compounds will form a cyclic ring as a major product on treatment of given compound with one equivalent of Mg in dry ether? BrCH₂CH₂Br BrCH₂CH₂CH₂Br BrCH₂CH=CHCH₂Br BrCH₂CH₂CH₂CH₂Br

Carry out the following mathematical operation: 29.34 24.76 Identify the number of significant figures for the answer of this operation. significant figure(s) What is the result of this calculation (when reported to the correct number of significant figures)? Carry out the following mathematical operation: 29.34 - 24.76 b. Identify the number of decimal places for the answer of this operation. What is the result of this calculation (when reported to the correct number of decimal places)?

Carry out the following mathematical operation: 94.73 x 95.977 Identify the number of significant figures for the answer of this operation.

According to the following reaction: 6HC1 (aq) + Fe₂O3 (s)-3H₂O (1) + 2FeCl3 (aq) What would you multiply "grams of hydrochloric acid" by to convert to the units "moles of iron(III) oxide" ?

For the molecular compound boron trifluoride, what would you multiply "grams of BF3" by to get the units "moles of BF3 "?

For the molecular compound phosphorus trichloride, what would you multiply "grams of PCI, " by to get the units "molecules of PCI3?

A graduated cylinder with a mass of 105.56 g has 45.4 mL of a certain liquid added to it. The mass of the cylinder and the liquid is 145.10 g. What is the density of this liquid? Density= g/mL.

According to the following reaction: Cl₂ (g) + 2Nal (s)→→→ 2NaCl (s) + 1₂ (s) What would you multiply "grams of chlorine" by to convert to the units "moles of sodium iodide"?

When carbon monoxide reacts with water, carbon dioxide and hydrogen are produced. The balanced equation for this reaction is: CO(g) + H₂O (l) CO₂ (g) + H₂ (g) If 3 moles of carbon monoxide react, The reaction consumes __ moles of water The reaction produces __ moles of carbon dioxide and moles of hydrogen

A sample of Xe weighs 41.0 grams. Will a sample of P that contains the same number of atoms weigh more or less than 41.0 grams? (more, less): Calculate the mass of a sample of P that contains the same number of atoms.

For the following reaction, 5.45 grams of sulfur dioxide are mixed with excess oxygen gas. The reaction yields 5.17 grams of sulfur trioxide. sulfur dioxide (g) + oxygen (g)-sulfur trioxide (g) What is the theoretical yield of sulfur trioxide ? What is the percent yield for this reaction ?

According to the following reaction, how many moles of water will be formed upon the complete reaction of 0.419 moles hydrogen peroxide (H₂O₂)? hydrogen peroxide (H₂O₂) (aq)-water (1)+ oxygen __ (g) moles water

The increase in the boiling point of a solution is given by the equation: AT= Kmi Where: AT=boiling point elevation Kboiling point elevation constant m = molality of the solution i = van't Hoff factor In order to solve for the van't Hoff factor, i, you must multiply both sides of the equation by the same expression: AT X __ = Kmi x__ The resulting equation is: 1-

When potassium hydroxide reacts with phosphoric acid, potassium phosphate and water are produced. The balanced equation for this reaction is: 3KOH (aq) + H₂PO4 (aq) →K3PO4 (aq) + 3H₂O (1) If 6 moles of potassium hydroxide react, The reaction consumes __ moles of phosphoric acid The reaction produces__ moles of potassium phosphate and, moles of water

Write the molecular formula of the following: 5) 2-methylbutane 6) 2,3-dibromo-1-pentene 7) 3-bromo-1-pentyne 8) 1,3-diethylbenzene 9) 2,4-diisopropylbenzoic acid 10) 3,3-dichloro-2,2-dimethylhexane 11) 3-fluoro-2-methyl-1-butene 12) 1-ethylcyclopropane 13) meta-propyltoluene 14) Cis-3,4-diiodio-3-heptene

Draw the expanded structures for the following alkenes, cyclic alkenes, and alkynes: a) noncyclic alkenes that contain 4 carbon atoms (three possible) b) cyclic alkenes that contain 4 carbon atoms (four possible) c) alkynes that contain 4 carbon atoms (two possible, neither of them are cyclic alkynes)

Alkenes: 1) Draw the line angle formula for cis-2,3-dibromobutane and for trans-2,3-dibromobutane. 2) Draw as many isomers as you can with the formula C6H10 (linear and cyclic). Name all the structures.

The Nitration reaction of methyl benzoate only shows meta product forming. Suppose you reran the experiment with toluene instead of methyl benzoate. What would be the major product(s) from nitration of toluene?

Which statement best describes why the equilibrium constant is a large number (greater than 1) in this simulation? a. At equilibrium the concentration of product is equal to the concentration of reactants. b. At equilibrium there is significantly less product than reactant. C. At equilibrium there is significantly more product than reactant.

Which of the following best describes heat? The measure of the average kinetic energy The transfer of kinetic energy from a hot to a cooler object The transfer of potential energy from a hot to a cooler object The total internal energy of a substance at a constant pressure

In the ground state of mercury, Hg, a. how many electrons occupy atomic orbitals with n = 6? electron(s) b. how many electrons occupy s atomic orbitals? electron(s) c. how many electrons occupy p, atomic orbitals? electron(s) d. how many electrons have spin "up" (m, = + ₂)? electron(s)

A mixture initially contains A, B, and C in the following concentrations: [A] = 0.550 M. [B] =1.40 M. and [C] = 0.300 M. The following reaction occurs and equilibrium is established: A + 2B=C At equilibrium, [A] = 0.390 Mand [C] = 0.460 M. Calculate the value of the equilibrium constant, K. Express your answer numerically.

5. Derive the Lewis structures for the following species: N2O4, NO2-, CIO3-, IC4-, I3-, SF4, SbF5, IF4+. Predict the geometry for all the preceding species then suggest their molecular geometries.

Choose four ways in which the Brønsted-Lowry concept expands on the Arrhenius concept. (Select all that apply.) It expands the concept of a base to include any species that accepts protons. It allows some species to be considered as acids or bases, depending on the other reactant with which they are mixed. It enables us to write acid-base reactions not only in liquid solutions but in gaseous solutions. It expands the concept of a base to include the compounds containing the OH- ion, not just the OH- ion. It enlarges the concepts of acids and bases to include lons as well as molecules. It enlarges the concepts of acids and bases to include ionic compounds as well as non-ionic compounds. It enables us to write acid-base reactions not only in aqueous solutions but in nonaqueous solutions.