« previous next »

Author Question: Which of the following molecules does NOT occur in left- and right-handed forms (carbon is the ... (Read 11 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?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

The human body produces and destroys 15 million blood cells every second.

Technique of Direct Fist Percussion: Left Kidney Technique of Direct Fist Percussion: Left Kidney
Imaginary Thoracic Lines, Left Lateral View Imaginary Thoracic Lines, Left Lateral View
Water Molecules Water Molecules
If enough vapor is added to the air to saturate it, a precipitation fog forms beneath the cloud If enough vapor is added to the air to saturate it, a precipitation fog forms beneath the cloud
Common Root Words and Combining Forms Cont. Common Root Words and Combining Forms Cont.
Pelvic rock. Place your right hand over the recipient’s left hip bone. Place your left hand over ... Pelvic rock. Place your right hand over the recipient’s left hip bone. Place your left hand over ...
Video: Parkinson's Disease

For a complete list of videos, visit our video library