Home
All Courses
Groups
Forums
Contact Us

Sign in Sign up

Search for:

Home
Contact/Feedback
YouTube

Home
All Courses
Groups
Forums
Contact Us

IB Chemistry

0% Complete

0/0 Steps

TOPIC 2/12: ATOMIC STRUCTURE

2.1 The nuclear atom

2 Lessons
|
2 Quizzes
1. Atomic structure
  1. Atomic structure QUIZ (paper 1)
2. Isotopes and relative atomic mass
  1. Isotopes and relative atomic mass QUIZ (paper 2)
2.2 Electronic configuration

3 Lessons
|
3 Quizzes
12.1 Electrons in atoms (HL)

2 Lessons
|
3 Quizzes
1. Energy calculations
  1. Energy calculations QUIZ (paper 2)
2. Trends in ionization energy
  1. Trends in ionization energy QUIZ (paper 1)
  2. Trends in ionization energy QUIZ (paper 2)

Participants 519

Margy
Lucio
Birgit
AbdulVally
acalojo

Show more

Quiz 2 of 8

← Previous Next→

Isotopes and relative atomic mass QUIZ (paper 2)

IB Chemistry 2.1 The nuclear atom Isotopes and relative atomic mass Isotopes and relative atomic mass QUIZ (paper 2)

Time limit: 0

Quiz Summary

0 of 3 Questions completed

Questions:

Information

You have already completed the quiz before. Hence you can not start it again.

Quiz is loading…

You must sign in or sign up to start the quiz.

You must first complete the following:

Results

Quiz complete. Results are being recorded.

Results

Your time:

Time has elapsed

You have reached 0 of 0 point(s), (0)

Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)

Average score
Your score

Categories

Not categorized 0%

Daww you didn’t pass. Keep trying. You need to score at least 65% to pass.
Good! You scored above 65%. You have won a bronze medal. This earns you 1 braindollar! Go for gold?
Very good! You scored above 80%. You have won a silver medal. This earns you 10 braindollars! Go for gold?
Congrats! You scored above 90%! You have won a gold medal. This earns you 100 braindollars!

maximum of 3 points
Pos.	Name	Entered on	Points	Result
Table is loading
No data available

Would you like to submit your quiz result to the leaderboard?

Loading

Name: E-Mail:

Captcha:

captcha

1
2
3

Current
Review
Answered
Correct
Incorrect

Question 1 of 3

1. Question
.
- A sample of iron has the following isotopic composition by mass.
  
  ⁵⁴Fe: 6.4%
  
  ⁵⁶Fe: 88.5%
  
  ⁵⁷Fe: 5.1%
  
  Calculate the relative atomic mass of iron based on these data.
  
  Answer (to three sig figs):
Correct

Incorrect
Question 2 of 3

2. Question
.
- Naturally occurring silver has two stable isotopes, ¹⁰⁷Ag and ¹⁰⁹Ag. The relative atomic mass of silver is 107.87. Estimate the percentage abundance of ¹⁰⁷Ag.
  
  Answer (to three sig figs): %
Correct

Incorrect
Question 3 of 3

3. Question
.
- Magnesium has three stable isotopes, Mg-24, Mg-25 and Mg-26. The abundance of Mg-24 is 78.6%. Calculate the abundance of Mg-25 .
  
  Mg-25 abundance (to three sig figs): %
Correct

Incorrect

Report

There was a problem reporting this post.

Harassment Harassment or bullying behavior

Inappropriate Contains mature or sensitive content

Misinformation Contains misleading or false information

Offensive Contains abusive or derogatory content

Suspicious Contains spam, fake content or potential malware

Other

Block Member?

Please confirm you want to block this member.

You will no longer be able to:

See blocked member's posts
Mention this member in posts
Invite this member to groups
Message this member
Add this member as a connection

Please note: This action will also remove this member from your connections and send a report to the site admin. Please allow a few minutes for this process to complete.

Report

You have already reported this .