« previous next »

Author Question: Which of the following statements about how ECPs and RU-486 work is most correct? A) Both ECPs ... (Read 65 times)

viki

  • Hero Member
  • *****
  • Posts: 525
on: Aug 27, 2018
Which of the following statements about how ECPs and RU-486 work is most correct?
 
  A) Both ECPs and RU-486 prevent pregnancy.
  B) ECPs prevent pregnancy, while RU-486 ends pregnancy at an early stage.
  C) ECPs end pregnancy at an early stage, while RU-486 prevents pregnancy.
  D) Both ECPs and RU-486 end pregnancy at an early stage.

Question 2

The rate constant for a particular second-order reaction is 0.47 M-1s-1. If the initial concentration of reactant is 0.25 mol/L, it takes ________ s for the concentration to decrease to 0.20 mol/L.
 
  A) 2.1
  B) 1.4
  C) 1.0
  D) 0.47
  E) 0.20


Zack0mack0101@yahoo.com

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Ecology at work Ecology at work
Einstein - Science is the work of... Einstein - Science is the work of...
Each of the eight injectors shown are producing a correct spray pattern for the applications. While ... Each of the eight injectors shown are producing a correct spray pattern for the applications. While ...
How Does Earth Work? Physical Geology and the Process of Science, 2nd Edition How Does Earth Work? Physical Geology and the Process of Science, 2nd Edition
Math work Math work
Tardigrade wasn't correct, nor was Gastrotricha. What on earth is this asking me. Tardigrade wasn't correct, nor was Gastrotricha. What on earth is this asking me.
Video: Control of ventilation rate by other brain centers (posts, hypothalamus & cerebral cortex)

For a complete list of videos, visit our video library