Homework Answers
the correct option is " 2 " [ A , C and D ]
the compound with lowest molecular mass gets eluted first and it has lesser retention time value. so, ' I ' has lowest molecular mass
the compound that gets eluted in the last will have higher molecular mass and as a result it has higher boiling point and also it has more affinity towards the column and as a result it has more retention time value . so , 'III' has highest boiling point and highest affinity towards the GC column
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Which of the following statements can be assumed true for the following gas chromatogram 1000 Signal...
Ethylene glycol boiling point-197.30C 1-butanol-117.6C 2-butanol-99.5 C Butanone-79.4 C How would a gradient elution(60...
Ethylene glycol boiling point-197.30C
1-butanol-117.6C
2-butanol-99.5 C
Butanone-79.4 C
How would a gradient elution(60 C-140 C) impact the
chromatogram?
Mobile Phase - Air (Flow Rate = 20 mL/min), Stationary Phase - poly(dimethylsiloxane), Oven Temperature - 75 °C. Ethane-1,2 diol (ethylene glycol), butanone, 1-butanol, 2-butanol In gas chromatography (GC) which component elute first depends on the boiling point. In GC the mixture is first converted to its gaseous states and then passes through the column. The component which has lowest boiling...
Qs1. Answer the following questions based on the gas chromatogram of a mixture of three components...
Qs1. Answer the following questions based on the gas chromatogram of a mixture of three components shown below. 1. What compound has the highest boiling point? 2. Arrange the compounds in increasing order of their polarity 3. What is the minor component in the mixture? Abundance 10 Retention Time (minutes)
The original mixture contains petroleum ether, 1-hexene, and 1-bromohexane in a 1:1:1 ratio. Petroleum ether has...
The original mixture contains petroleum ether, 1-hexene,
and 1-bromohexane in a 1:1:1 ratio.
Petroleum ether has the lowest boiling point range of
40-60ºC and the lower boiling point compounds travel through the
column faster than the higher boiling point compounds. 1-hexene
would have the second highest retention time with its boiling point
of 63ºC and 1-bromohexane would have the lowest with a boiling
point of 143ºC.
i) Draw the FID spectrum for the original mixture (you will not
know the...
5) (3 pts) For a double-stranded DNA molecule, which of the following statements are true? If...
5) (3 pts) For a double-stranded DNA molecule, which of the following statements are true? If false, explain why. a. [A+C] = [G+T] b. [A+G] = [C+T) c. A=G and C=T d. A/T=C/G e. [A+T] = [G+C] f. C/A=T/G 6) (3 pts) Listed below are the base compositions of three different duplex DNA molecules. L S'ATTCTAACTTTGAT 3' 3' TAAGATTGAAACTA 5 IL S'CGCACTGGCTAACC 3' 3'GCGTGACCGATTGG 5' II. 5'CGCATTATTGTCAA 3' 3'GCGTAATAACAGTT 5' a) Order these three molecules in terms of their melting...
Which of the following statements is true for the peak in a mass spectrum that corresponds...
Which of the following statements is true for the peak in a mass spectrum that corresponds to the molecular ion? a. It has the highest m/e value of all the peaks in the spectrum b. It has the largest peak height in the spectrum c. The m/e value corresponds to a very stable carbocation d. The m/e value equals the molecular weight of the compound
Question 29 (Mandatory) (1 point) Which of the following is true about the kinetic molecular theory?...
Question 29 (Mandatory) (1 point) Which of the following is true about the kinetic molecular theory? U a) The volume of a gas particle is considered to be small-about 0.10 mL. U b) Pressure is due to the collisions of the gas particles with the walls of the container, U C) Gas particles repel each other, but do not attract one another. u d Adding an ideal gas to a closed container will cause an increase in temperature. u e)...
1. Which of the following statements is not consistent with the kinetic-molecular theory of gas? a....
1. Which of the following statements is not consistent with the kinetic-molecular theory of gas? a. The volume occupied by the gas molecules only becomes significant at very low pressures b. A given volume of gas is mostly empty space except near the condensing point c. Except near condensing point, the attractive forces between gas molecules are very small d. The attractive forces between the molecules only becomes significant at very low temperatures 2. Which of the following statements does...
Which of the following statements is true for the standard Normal curve? a. It has a...
Which of the following statements is true for the standard Normal curve? a. It has a standard deviation located at the point of curvature change on either side of the mean. b. It has a mean of 0 and a standard deviation of 1. c. All of these choices are correct. d. It has a mean centered under the highest point of the curve.
Which of the following statements is true You can select multiple answers if you think so)...
Which of the following statements is true You can select multiple answers if you think so) Yanitiniz: In a salt water example, water is the solvent and salt is the solute If you wish to find the concentration of a base solution, you would titrate the base solution with a solution of an acid (titrant). You have to know the concentration of the titrant. Following reaction is an exothermic reaction: 6CO/D + H,01h+ energy-> CHOdaq +60/6) Pycnometer bottle has a...
Question Completion Status: QUESTION 23 Which of the following statements is true of aldehydes and ketones?...
Question Completion Status: QUESTION 23 Which of the following statements is true of aldehydes and ketones? a. Both aldehydes and ketones are easily oxidized. b. Neither aldehydes nor ketones are easily oxidized. c. Aldehydes are easily oxidized, but ketones cannot be readily oxidized. Od. Ketones are easily oxidized, but aldehydes cannot be readily oxidized QUESTION 24 Which of the following compounds has the lowest boiling point? O a. acetone b. formaldehyde O c 3-octanone d. cyclopentanone QUESTION 25 Anster the...
Ethylene glycol boiling point-197.30C
1-butanol-117.6C
2-butanol-99.5 C
Butanone-79.4 C
How would a gradient elution(60 C-140 C) impact the
chromatogram?
Mobile Phase - Air (Flow Rate = 20 mL/min), Stationary Phase - poly(dimethylsiloxane), Oven Temperature - 75 °C. Ethane-1,2 diol (ethylene glycol), butanone, 1-butanol, 2-butanol In gas chromatography (GC) which component elute first depends on the boiling point. In GC the mixture is first converted to its gaseous states and then passes through the column. The component which has lowest boiling...
Qs1. Answer the following questions based on the gas chromatogram of a mixture of three components shown below. 1. What compound has the highest boiling point? 2. Arrange the compounds in increasing order of their polarity 3. What is the minor component in the mixture? Abundance 10 Retention Time (minutes)
The original mixture contains petroleum ether, 1-hexene,
and 1-bromohexane in a 1:1:1 ratio.
Petroleum ether has the lowest boiling point range of
40-60ºC and the lower boiling point compounds travel through the
column faster than the higher boiling point compounds. 1-hexene
would have the second highest retention time with its boiling point
of 63ºC and 1-bromohexane would have the lowest with a boiling
point of 143ºC.
i) Draw the FID spectrum for the original mixture (you will not
know the...
5) (3 pts) For a double-stranded DNA molecule, which of the following statements are true? If false, explain why. a. [A+C] = [G+T] b. [A+G] = [C+T) c. A=G and C=T d. A/T=C/G e. [A+T] = [G+C] f. C/A=T/G 6) (3 pts) Listed below are the base compositions of three different duplex DNA molecules. L S'ATTCTAACTTTGAT 3' 3' TAAGATTGAAACTA 5 IL S'CGCACTGGCTAACC 3' 3'GCGTGACCGATTGG 5' II. 5'CGCATTATTGTCAA 3' 3'GCGTAATAACAGTT 5' a) Order these three molecules in terms of their melting...
Question 29 (Mandatory) (1 point) Which of the following is true about the kinetic molecular theory? U a) The volume of a gas particle is considered to be small-about 0.10 mL. U b) Pressure is due to the collisions of the gas particles with the walls of the container, U C) Gas particles repel each other, but do not attract one another. u d Adding an ideal gas to a closed container will cause an increase in temperature. u e)...
Which of the following statements is true You can select multiple answers if you think so) Yanitiniz: In a salt water example, water is the solvent and salt is the solute If you wish to find the concentration of a base solution, you would titrate the base solution with a solution of an acid (titrant). You have to know the concentration of the titrant. Following reaction is an exothermic reaction: 6CO/D + H,01h+ energy-> CHOdaq +60/6) Pycnometer bottle has a...
Question Completion Status: QUESTION 23 Which of the following statements is true of aldehydes and ketones? a. Both aldehydes and ketones are easily oxidized. b. Neither aldehydes nor ketones are easily oxidized. c. Aldehydes are easily oxidized, but ketones cannot be readily oxidized. Od. Ketones are easily oxidized, but aldehydes cannot be readily oxidized QUESTION 24 Which of the following compounds has the lowest boiling point? O a. acetone b. formaldehyde O c 3-octanone d. cyclopentanone QUESTION 25 Anster the...
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