1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
valkas [14]
3 years ago
7

The labels on a shipment of the five chemicals A –E below were washed off by accident when the delivery truck went through a tru

ckwash with the doors open. A clever student took infrared spectra of each of the resulting unknowns. Unknown #1 had a strong, broad IR absorption at 3400–3600 cm–1, and no absorptions between 1600 and 2900 cm–1. Unknown #2 had a strong absorption at 1680 cm–1 and no absorptions above 3100 cm–1. What are the structures of unknowns 1 and 2?
Mathematics
1 answer:
Tanya [424]3 years ago
8 0

Answer:

Unknown 1: -OH group at 3400-3600

Unknown 2: Ketone and alkene group

Step-by-step explanation:

Unknown 1:

This compound has a strong IR absorption at 3400 - 3600cm-¹; this indicates that it is an alcoholic group (OH)

No absorption between 1600 and 2900cm-¹: this rule out the presence of ketone (C = O)

Hence the unknown compound is OH group

Unknown 2:

This has strong IR absorption at 1680cm-¹: this indicates the presence of (C=O) group.

No absorptions above 3100cm-¹: this indicates the presence of C = C - H

So therefore, unknown 2 is most likely to be Ketone and alkene group

You might be interested in
Whats the answer and how​
Jet001 [13]

Answer: its c or 35

Step-by-step explanation: because at 10 salespeople its 40, so 9 salespeople is 35

8 0
2 years ago
Yeoooo i need help 3-8, this stuff is due at 1:30 pm i’ll give y’all like 69 points or sum lol
Zielflug [23.3K]

Answer: Hi

Step-by-step explanation:

Can you take a better pic, then I help

3 0
3 years ago
Elena’s dad buys another type of cell phone that also usually sells for $250. He pays 75% of the usual price. How much did he pa
Mademuasel [1]
Elena’s dad paid $187.5.
8 0
2 years ago
Select all the true statements. *
I am Lyosha [343]
A,C,D are the answers
8 0
3 years ago
Write an equation of a line in slope-intercept form given the slope (m) and the y-intercept (b).
m_a_m_a [10]

Step-by-step explanation:

y = mx + b

y = -7x + 7

this assumes m = - 7 , it got chopped off, otherwise what ever slope is change the first 7 for that number.

8 0
3 years ago
Other questions:
  • What is the answer? Brainliest and 13 pointsssssss
    10·1 answer
  • What’s the correct answer for this question?
    5·1 answer
  • Solve the proportion. <br> 10/a = 15/30<br> A = 20<br> A = 10<br> A = 2<br> A = 5
    11·2 answers
  • I appreciate all the help guys! Need help on this one y’all
    5·1 answer
  • Put the following in -1/4, -5.0, 0.7, 4/5
    7·1 answer
  • 15 is 9 more than j translate one step equations and solve
    7·1 answer
  • there are 30 major league baseball (MLB) teames and 32 National football League (NFL) teams. The expanded roster for MLB teams i
    15·1 answer
  • Translate the phrase into an algebraic expression.<br> The quotient of w and 4
    14·1 answer
  • Which of these numbers below are exactly divisible by nine 107, 513, 944, 126, 802
    7·1 answer
  • While looking at some reports, a store manager notes that televisions that retail for $475 and up costing customers $513 once th
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!