This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Elements in the same group have A) the same atomic number. B) the same number of neutrons. C) ... (Read 46 times)

craiczarry

  • Hero Member
  • *****
  • Posts: 527
on: Aug 27, 2018
Elements in the same group have
 
  A) the same atomic number.
  B) the same number of neutrons.
  C) the same number of electrons.
  D) the same number of valence electrons.

Question 2

If the half-life of an isotope is 5 hr, the amount of 20.0 g remaining after 15 hr will be ________.
 
  A) 2.5 g
  B) 5.0 g
  C) 6.67 g
  D) 10.0 g


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

amandanbreshears

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

A


craiczarry

  • Member
  • Posts: 527
Reply 2 on: Aug 27, 2018
Thanks for the timely response, appreciate it

strudel15

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Relationship between Hox gene number and body complexity in different types of animals. Relationship between Hox gene number and body complexity in different types of animals.
A blood smear. The smear reveals representative cells from each formed element group: red blood cell A blood smear. The smear reveals representative cells from each formed element group: red blood cell
Visual Elements of Pictorial Expression: A. Carpet Page from the Lindisfarne Gospels Visual Elements of Pictorial Expression: A. Carpet Page from the Lindisfarne Gospels
ELEMENTS OF ARCHITECTURE: The Greek Orders ELEMENTS OF ARCHITECTURE: The Greek Orders
The Elements of Cognition The Elements of Cognition
A thimble of water contains 4.0 x 1021 molecules. The number of moles of H2O is: A thimble of water contains 4.0 x 1021 molecules. The number of moles of H2O is:
Video: Activation Energy - Valence Electrons

For a complete list of videos, visit our video library