Hydrocarbons Questions and Answers

Which statement about the chemical reactions of photosynthesis is true? SELECT ALL THAT APPLY* (5 Points) they convert light energy into chemical energy they are endothermic they can be represented by 6CO2 +6H20 -->C6H12O6 + 602

Determine whether each reaction depends on a limiting reactant. Explain why or why not and identify the limiting reactant. (Select all that apply.) (a) Potassium chlorate decomposes to form potassium chloride and oxygen. Yes, one reactant is naturally limiting. Yes, there are two reactants. No, all reactants are in excess. No, there is only one reactant. potassium chlorate Opotassium chloride oxygen Not enough information to identify which is the limiting reactant.

A student was asked to calculate the mass of Ca(OH)2 needed to create 2.5 liters of 3.0 M aqueous solution. The student's work is below. The student got the answer wrong. Identify the error, explain the mistake in detail and provide the correct calculation and answer.

Jose makes two mixtures. Mixture one contains 10 g of salt dissolved in 50 mL of water. Mixture two contains 20 g of salt dissolved in 50 mL of water. Compare the concentrations of the two mixtures. Select one: a. The mixtures are of equal concentration. b. Mixture two is more concentrated than mixture one. c. Both mixtures are equally concentrated. d. Mixture one is more concentrated than mixture two.

BF, has various applications. One example is its use for producing adhesives. Given the chemical structure of BF,, would you expect it to be used as an adhesive to attach to polar or non-polar molecules? In formulating your answer, include the following information below: nuptry (shape) of d. Is BF, polar or non-polar? 3 termine f. Is water polar or non-polar? ng the e. Do you expect BF, to be water soluble? Why or why not?

A clean strip of copper is dipped into a solution of magnesium sulfate. Predict what you might observe. (Hint: use activity series) The copper becomes coated in magnesium. The copper dissolves and the solution turns blue. Bubbles appear as hydrogen gas is produced. No reaction occurs.

Rank the following starting materials in order of increasing rate of reaction (slowest to fastest) in an SN1 reaction: 3<1<2 1<2<3 2<3<1 1<3<2 2<1<3

Provide the products and mechanisms for reactions a) and b). For c) provide the products only necessary to complete the synthesis. Indicate what mechanism was used for each product.

Propose the structure of the following C10H12O2 IR band: peak at 1720 cm-¹ ¹H NMR: triplet, 2.53 ppm, 2H triplet, 2.85 ppm, 2H singlet, 3.60 ppm, 3H singlet, 7.19ppm, 1H doublet, 7.23 ppm, 2H doublet, 7.28 ppm, 2H

Rank the substrates below in order of increasing reactivity (from slowest to fastest) in a substitution reaction with KCN in DMSO. (Tos = tosylate) 1<3<2 3<2<1 2<3<1 3<1<2 1<2<3

What is the organic product of the reaction between ethanol and ethanoic acid in the presence of sulfuric acid? A. CH3CHO B. CH3COOCH3 C. CH3CH₂COOCH3 D. CH3COOCH₂CH3

As a result of the "leveling effect," the strongest acid that can exist in appreciable concentration in aqueous solution is H₂SO4 HCI H30 HNO3 H₂O

(a) Mendeleyev discovered that when elements are arranged in order of increasing atomic weight, certain sets of properties recur periodically (b) Main-group elements are those in the columns 3A to 8A of the Periodic Table. (c) Nonmetals are found at the top of the Periodic Table, metalloids in the middle, and metals at the bottom. (d) Among the 118 known elements, there are approximately equal numbers of metals and nonmetals. (e) A horizontal row in the Periodic Table is called a group. (f) The Group 1A elements are called the "alkali metals."

When you blow bubbles in a glass of water, the following reactions take place: H₂O+CO2-->H₂CO3>H*+HCO 3 A. What type of reaction is H₂O+CO2 -->H₂CO3 B. What type of reaction is H₂CO3-H* +H CO3

Draw the following and write the molecular formula: 3) 1-iodo-2-methylbenzene 4) cis-1,2-dichloroethene 5) cis-2-pentene 6)5-chloro-4-ethyl-2-heptyne 7) 3-methyl-1-butene 8) 4-chloro-1-cycloheptene 9) 4-bromo-2chlorophenol 10) 4-chloro-1-iodo-2-hexyne

Draw the structural formula for triisopropylamine.

Propose an efficient synthesis for the following transformation: A reaction shows Ethynylcyclopentane with SMILES string of C#CC1CCCC1 forming 1-Cyclopentylacetone with SMILES string of CC(=O)CC1CCCC1. The transformation above can be performed with some reagent or combination of the reagents listed below. Give the necessary reagent(s) in the correct order, as a string of letters (without spaces or punctuation, such as "EBF"). If there is more than one correct solution, provide just one answer. A. Mel B. H₂, Lindlar's catalyst C. NaNH2 D. 1) MeMgBr 2) H3O+ E. 1) O3, 2) H2O F. 1) R₂BH 2) H₂O₂, NaOH G. 1) EtMgBr 2) H3O+ H. H₂O, H₂SO4, HgSO4 I. Na₂Cr₂O7, H₂SO4, H₂O

In cumulene, what are the C-C-C and H-C-H bond angles, respectively?

how many degrees of unsaturation are present in each molecule below? 1. C₂H/Br3 2. C5H100 3. CsHsN

A hydrocarbon having molecular weight 70 gives a single monochloride on chlorination. The number of dichlorides formed on (including stereoisomers) chlorination of the hydrocarbon will be ____

Draw the structure of the organic product(s) of the reaction between (S)-3-methylhexan-2-one and phenylmagnesium bromide, followed by acidification. . Use the wedge/hash bond tools to indicate stereochemistry where it exists. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate multiple products using the + sign from the drop-down menu. .

The synthesis above can be performed with some combination of the reagents listed below. Give the necessary reagents in the correct order, as a string of letters (without spaces or punctuation). Be sure to consider stereochemistry and regiochemistry. A. HBr B. Br2, CCl4 C. Br₂, light D. NaCCH E. HBr, ROOR F. NaNH2 G. Na, NH3 H. CH3CH₂Br

A student saw the following nuclear symbol for an unknown element: 2x Which of the following statements about X and X-9 are true? (Select all that apply.) Ox2+ has 6 electrons. OX is beryllium. X has 9 neutrons in its nucleus. X-9 has a neutron/proton ratio of about 1.3. X is fluorine.

What is the definition of an alkyne? A. An alkyne is a hydrocarbon containing one or more triple bonds. B. An alkyne is a hydrocarbon containing two carbon double bonds. C. An alkyne is a hydrocarbon containing one or more multiple bonds. D. An alkyne is a hydrocarbon containing one or more double bonds.

Balance the following equation using whole numbers. What is the coefficient for CO₂? C6H14+ O₂ -> CO₂ + H₂O Select the correct answer below: A. 2 B.1 C. 19 D. 12

The retrosynthetic arrow in the following scheme describes a reaction that would use which of the reagents below?

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