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Which statement is true about a racemic mixture? TV Select one: O a. The specific rotation...
Select one: O a. The specific rotation equals zero ob. Both enantiomers are present in equal amounts O c. The bp of the racemic mixture is equal to the bp of the pure enantiomers O d. All of the above Question 37 Not yet answered Marked out of 3.00 P Flag question What is the major product of the reaction below? KCN DMSO Br
Which molecule has the shortest C-C bond? Select one: н Н а. C-C Н н Н н ob. н-с-с-Н н Н с. НЕСЕСЕН Not yet answered Marked out of 3.00 P Flag question Which one of the following compounds would have a specific rotation [a]p = 0 ? Br CH3 H -Br Н. -Br CH3 Br H CH3 -H Br CH3 H Br CH3 -Br -H CHE Br CH3 -Н -H CH,CHE a c d Select one: a. a b....
10) Which of the following statements is (are) true for the compound (R)-2-butanol? A) This compound is chiral. B) This compound is optically active. C) This compound has an enantiomer D) all of the above E) none of the above 11) Predict the specific rotation of the compound shown. CH нс A) It is impossible to predict; it must be determined experimentally. B) Because both asymmetric centers are R, the compound is dextrorotatory. C) Because both asymmetric centers are S,...
Which statement is correct regarding a racemiC mixture It is optically inactive. a) It has an optical purity of 0%. It is a 50/50 mixture of diastereomers. b) c) d) Both a and b are true. Which of the following molecules has two stereogenic centers? H C C=C MMe OH HO H IV I and III a) b) II and IV c) I II and IV d) all of them
Which of the following statements is true about the products (A and B) of the reaction shown below? HBr A + B Br 1 (a) A and B are enantiomers. (b) A and B are racemic mixture (c) A and B are diastereomers. (d) Two of the above (e) All of the above
Which statement is true about pure substances? Select the correct answer below: Only elements are considered pure substances. Pure substances can be separated further by physical means. All pure substances are made of only one type of atom. Both compounds and elements are types of pure substances.
Macroeconomic Which of the following is a true statement about the multiplier? Select one: Oa. The multiplier solety depends on the MPC. b. The smaller the MPC, the smaller the multiplier. O C. The multiplier is a value between zero and one O d. The multiplier effect does not occur when autonomous expenditures decrease
Which statement is MOST true about large and fast-growing markets? Select one: a. They always present a huge opportunity for a start-up. b. They will likely attract large competitors. c. They are only evaluated through primary research techniques. d. All of the above
Which of the following statement is true regarding inventory costing? Select one: O A. Under FIFO, the first units purchased are sold and ending inventory is made up of the most recent purchase O B. The cost of ending inventory is the same Under the LIFO and FIFO methods. O C. Both statements are true O D. None of the above statements are true Petty Cash is reserved for large purchases or repairs such as the replacement of a truck...
Which statement is true? Select one: O a. The electrical conductivity of a semiconductor increases with temperature b. The resistivity of a semiconductor increases with temperature o c. Metals and semiconductors have similar electrical conducting properties O d. The electrical conductivity of a metal increases with temperature Save response Which statement is true about an XY2 lattice? Select one: O a. The unit cell contains twice as many X2n+ ions as Yn- b. The coordination environments of x2n+ and Yn-are...