ZuoTi.Pro
Question

1.Calculate the specific rotation, [α], if the observed rotation is -24°, the concentration is 31 g/100...

1.Calculate the specific rotation, [α], if the observed rotation is -24°, the concentration is 31 g/100 mL, and the cell length is 5 cm.   Answer in :° mL/g/dm

2. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of the peaks, at half height, are 4.9 mm, 4.7 mm and 4.6 mm, respectively. Calculate the percentage composition of C in the sample. Answer in : %

3. A gas chromatograph can be used to (more than one answer may be correct)

-determine the mass of a compound.

-determine the percentage composition of a mixture.

-purify large quantities of compounds.

-separate vaporizable compounds.

-separate nonvolatile compounds.

science   chemistry   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Given observed Rotation of sample = Lobe = -2 Concentration of sample = c = toomt C = 0.318. cell length = l = 5cm - 1 cm = o

0 0
Add a comment
Know the answer?
Add Answer to:
1.Calculate the specific rotation, [α], if the observed rotation is -24°, the concentration is 31 g/100...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • 1. The height of three peaks; A, B, and C obtained in a gas chromatogram are...

    1. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of the peaks, at half height, are 4.9 mm, 4.7 mm and 4.6 mm, respectively. Calculate the percentage composition of C in the sample. Answer in : % 2. A gas chromatograph can be used to (more than one answer may be correct) -determine the mass of a compound. -determine the percentage composition of a...

  • 1. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of...

    1. The height of three peaks; A, B, and C obtained in a gas chromatogram are 27.7 mm, 19.2 mm and 41.0 mm. The width of the peaks, at half height, are 4.9 mm, 4.7 mm and 4.6 mm, respectively. 2.The optical purity of (+)-glucose in a mixture of (+) and (-)-glucose is 72%. What is the percentage of (+)-glucose in the sample? 3.Calculate the specific rotation, [α], if the observed rotation is -24°, the concentration is 0.4 g/mL, and...

  • Prelab Questions: 1. Calculate the observed specific rotation for the following molecule given the following informatio...

    Prelab Questions: 1. Calculate the observed specific rotation for the following molecule given the following information: Observed rotation = +15.6 Path length = 1 dm Concentration = 0.5 g/mL (These calculation were performed at 25 °C using a Sodium “D” lamp) 2. A sample of chiral 2-butanol has a specific rotation of -3.25º. Determine the % ee and the molecular composition of this sample (% of one enantiomer and % of opposite enantiomer). The specific rotation of pure (-)-2-butanol is...

  • Please help with pre-lab questions. Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation...

    Please help with pre-lab questions. Pre-Lab Questions: 1. A sample of 2-butanol has a specific rotation of +3.25. Determine the optical purity (%ee) and percent composition of this sample (see Mohrig section 17.4). The specific rotation of pure (+)-2-butanol is +13.0°. 2. The equation for the formation of the diastereomeric salts is shown in the background information (performed in Part A of the procedure). Write this chemical equation in your notebook, then ALSO write a balanced equation for the formation...

  • Separating a Mixture, Recrystallization, pre-lab assignment could you also explain why you chose that substance for...

    Separating a Mixture, Recrystallization, pre-lab assignment could you also explain why you chose that substance for the empty spaces and question marks EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...

  • Please answer all multiple choice All questions need to be answered! Questions 1-20 are multiple choice...

    Please answer all multiple choice All questions need to be answered! Questions 1-20 are multiple choice questions. Please mark the correct circle on the Scantron form. Only the Scantron form will be graded. Scantron must be filled in before time is called Which of the following acids is not a strong acid? 5 HI b. HBr to SEHNO, HF HESO. Venter 2. Which of the following is an example of an empirical formula: a Cs Ho HO LP Fea(SO) d)...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT