« previous next »

Author Question: Which of the following molecules does NOT occur in left- and right-handed forms (carbon is the ... (Read 58 times)

leilurhhh

  • Hero Member
  • *****
  • Posts: 560
on: Jul 27, 2018
Which of the following molecules does NOT occur in left- and right-handed forms (carbon is the central atom and the groups around this central atom are in parentheses)?
 
  A) (H) (Cl) C (F) (D)
  B) (CH3 ) (NH2 ) C (COOH) (H)
  C) (CHO ) (C2H5 ) C (C2H5 ) (H)
  D) (C4H9 ) (C2H5 ) C (CH3 ) (C3H7)

Question 2

The expansion rate of the Universe is
 
  A) increasing.
  B) decreasing.
  C) constant.
  D) different in different directions.
  E) independent of time.


taylorsonier

  • Sr. Member
  • ****
  • Posts: 377
Reply #1 on: Jul 27, 2018
Answer to Question 1

C

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

leilurhhh

  • Hero Member
  • *****
  • Posts: 560
Reply #2 on: Jul 27, 2018
Both answers were spot on, thank you once again


taylorsonier

  • Sr. Member
  • ****
  • Posts: 377
Reply #3 on: Jul 27, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

DNA molecules replicate to form identical chromatids DNA molecules replicate to form identical chromatids
The nonionic form does not occur in significant amounts in aqueous solutions The nonionic form does not occur in significant amounts in aqueous solutions
In 1993 Clinton succeeded in brokering a deal between Israeli prime minister Yitzhak Rabin (left) ... In 1993 Clinton succeeded in brokering a deal between Israeli prime minister Yitzhak Rabin (left) ...
The exhaust drives the turbine wheel on the left, which is connected to the impeller wheel on the ... The exhaust drives the turbine wheel on the left, which is connected to the impeller wheel on the ...
Forms of spina bifida. Forms of spina bifida.
The growing demand for electrical power, carbon sequestration and storage must be a priority The growing demand for electrical power, carbon sequestration and storage must be a priority
Video: Frequency of stimulation and force (Recruitment of motor units and force)

For a complete list of videos, visit our video library