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Which of the following statements about organolithium reagents is false? c. They are formed from the...
22. Which of the following substances, when added to water, will produce a solution with a pH abo...
22. Which of the following substances, when added to water, will produce a solution with a pH above 7.0? A. NHaCİ B. CHsNHCl C. NH4NO3 D. HOCİ E. NaoCi 23. The following acids are listed in order of decreasing acid strength in water.HI> HNO2> CH,COOH> HOCI HCN. According to Bronsted-Lowry theory, which of the following ions is the weakest base? A. I B. NO. C. CHCOo D. ocT E. CN 24. The following reaction is described as: H2S + H2S...
Which of the following statements is (are) true about free radical halogenation of alkanes? choose only...
Which of the following statements is (are) true about free radical halogenation of alkanes? choose only one 1) The first of the chain-propagating steps is rate-determining. 2) The reaction proceeds by way of a flat sp2 hybridized free radical. 3) The chain-initiating step involves cleavage of a carbon-hydrogen bond to afford a carbon radical and a hydrogen atom. 4) Statements (The first of the chain-propagating steps is rate-determining) and (The reaction proceeds by way of a flat sp2 hybridized free...
4. Give the mechanistic symbol(s) (SNI. SN2, E1, E2) that is most consistent with each of the following stateme...
4. Give the mechanistic symbol(s) (SNI. SN2, E1, E2) that is most consistent with each of the following statements. a. Methyl halides react with sodium cthoxide in ethanol only by this mechanism. b. Alkyl iodides react faster than alkyl bromides in reactions that proceed by these mechanisms. c. Results in the largest amount of racemization of an optically active alkyl halide. d. These reaction mechanisms are the ones mostly likely to have been involved when the products are found to...
Mark the false statements And please explain. Mark the false statements. A. Bonds formed from overlap...
Mark the false statements
And please explain.
Mark the false statements. A. Bonds formed from overlap of atomic s orbitals are always sigma bonds. Two bonds comprise a double bond. A pi bond restricts rotation about the bond axis.. End-to-end overlap of orbitals results in a bond with electron density above and below the bond axis. E. A pi bond consists of two pairs of electrons. A triple bond consists of one pi bond and two sigma bonds.
Which of the following statements about digestion is false? 29. Which of the following statements about...
Which of the following statements about
digestion is false?
29. Which of the following statements about digestion is FALSE? A. Enzymes that carry out the final step in the digestion of carbohydrates are produced by the intestinal epithelial cells. B. Enzymes that carry out the final step in the digestion of carbohydrates produce absorbable monosaccharides. C. Unabsorbed lactose is metabolized by bacteria in the colon. D. Enzymes that carry out the final step in the digestion of proteins are secreted...
Which one of the following statements about the following reaction is false? CH2(g) + 20%(9) CO2(g)...
Which one of the following statements about the following reaction is false? CH2(g) + 20%(9) CO2(g) + 2H2O(g) (a) Every methane molecule that reacts produces two water molecules. (b) If 32.0 g of oxygen reacts with excess methane, the maximum amount of carbon dioxide produced will be 22.0 g. (c) If 11.2 liters of methane react with an excess of oxygen, the volume of carbon dioxide produced at STP is (44/16)(11.2) liters. (d) If 16.0 g of methane react with...
please help me with organic chemistry! i swear we havent talked about any of this in...
please help me with organic chemistry! i swear we havent
talked about any of this in class.
1) Compounds A, B, and have the same molecular formula. C.H. They all react with H/PtO2 to give the same compound. The reaction of A or B with H2O/HSO, or with BH-THF, followed by treatment with a basic solution of hydrogen peroxide, gives the same compound, namely D. The reaction of with H2O/H2SO4 also gives D. However, the reaction of C with BH-THF,...
2) The following two reactions are performed on the same starting material; one producing "product 1"...
2) The following two reactions are performed on the same starting material; one producing "product 1" and one producing "product 2" as the major products. Which of the following statements is false regarding these two reactions? HBr, H202 - >. HBr Product 1 (Major) - Product 2 (Major) a) The rate of reaction for product 1 is dependent on the formation of the more stable carbocation. b) The reaction for product 2 is via a radical intermediate. c) Both of...
1.Acidic materials can be identified by which of the following test outcomes: a. They react...
1.Acidic materials can be identified by which of the following test outcomes: a. They react with metals. b. They feel slippery. c. They may taste bitter. d. They turn litmus paper red. e. All of the above. 2. Which of the following would you expect to turn litmus paper blue: a. chalk b. baking soda c. oven cleaner d. all of the above e. none of the above 3. Which of the following statements about acidic water...
which of the following statements about isotopes is false Which of the following statements about isotopes...
which of the following statements about isotopes is
false
Which of the following statements about isotopes is false? Select one: O a. An isotope with more neutrons will have a greater mass than an isotope with fewer neutrons. O b. All of the above are true. c. Isotopes are atoms with same number of protons but different numbers of neutrons. d. Isotopes are atoms with the same atomic number but different mass numbers. O e. Most elements naturally have more...
22. Which of the following substances, when added to water, will produce a solution with a pH above 7.0? A. NHaCİ B. CHsNHCl C. NH4NO3 D. HOCİ E. NaoCi 23. The following acids are listed in order of decreasing acid strength in water.HI> HNO2> CH,COOH> HOCI HCN. According to Bronsted-Lowry theory, which of the following ions is the weakest base? A. I B. NO. C. CHCOo D. ocT E. CN 24. The following reaction is described as: H2S + H2S...
4. Give the mechanistic symbol(s) (SNI. SN2, E1, E2) that is most consistent with each of the following statements. a. Methyl halides react with sodium cthoxide in ethanol only by this mechanism. b. Alkyl iodides react faster than alkyl bromides in reactions that proceed by these mechanisms. c. Results in the largest amount of racemization of an optically active alkyl halide. d. These reaction mechanisms are the ones mostly likely to have been involved when the products are found to...
Mark the false statements
And please explain.
Mark the false statements. A. Bonds formed from overlap of atomic s orbitals are always sigma bonds. Two bonds comprise a double bond. A pi bond restricts rotation about the bond axis.. End-to-end overlap of orbitals results in a bond with electron density above and below the bond axis. E. A pi bond consists of two pairs of electrons. A triple bond consists of one pi bond and two sigma bonds.
Which of the following statements about
digestion is false?
29. Which of the following statements about digestion is FALSE? A. Enzymes that carry out the final step in the digestion of carbohydrates are produced by the intestinal epithelial cells. B. Enzymes that carry out the final step in the digestion of carbohydrates produce absorbable monosaccharides. C. Unabsorbed lactose is metabolized by bacteria in the colon. D. Enzymes that carry out the final step in the digestion of proteins are secreted...
Which one of the following statements about the following reaction is false? CH2(g) + 20%(9) CO2(g) + 2H2O(g) (a) Every methane molecule that reacts produces two water molecules. (b) If 32.0 g of oxygen reacts with excess methane, the maximum amount of carbon dioxide produced will be 22.0 g. (c) If 11.2 liters of methane react with an excess of oxygen, the volume of carbon dioxide produced at STP is (44/16)(11.2) liters. (d) If 16.0 g of methane react with...
please help me with organic chemistry! i swear we havent
talked about any of this in class.
1) Compounds A, B, and have the same molecular formula. C.H. They all react with H/PtO2 to give the same compound. The reaction of A or B with H2O/HSO, or with BH-THF, followed by treatment with a basic solution of hydrogen peroxide, gives the same compound, namely D. The reaction of with H2O/H2SO4 also gives D. However, the reaction of C with BH-THF,...
2) The following two reactions are performed on the same starting material; one producing "product 1" and one producing "product 2" as the major products. Which of the following statements is false regarding these two reactions? HBr, H202 - >. HBr Product 1 (Major) - Product 2 (Major) a) The rate of reaction for product 1 is dependent on the formation of the more stable carbocation. b) The reaction for product 2 is via a radical intermediate. c) Both of...
which of the following statements about isotopes is
false
Which of the following statements about isotopes is false? Select one: O a. An isotope with more neutrons will have a greater mass than an isotope with fewer neutrons. O b. All of the above are true. c. Isotopes are atoms with same number of protons but different numbers of neutrons. d. Isotopes are atoms with the same atomic number but different mass numbers. O e. Most elements naturally have more...
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