1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
larisa [96]
3 years ago
12

Thallium has two stable isotopes, 203tl and 205tl. knowing that the atomic weight of thallium is 204.4, which isotope is the mor

e abundant of the two? explanation
Chemistry
1 answer:
Elza [17]3 years ago
7 0
You have to figure out a way to write the two unknown abundances in terms of one variable.

The total abundance is 1 (or 100%). So if you say the abundance for the first one is X then the abundance for the second one has to be 1-X (where X is the decimal of the percentage so say 0.8 for 80%).

203(X) + 205(1-X) = 204.4

Then you just solve for X to get the percentage for TI-203.
And then solve for 1-X to get the percentage for TI-205.

After that the higher percentage would be the most abundant.

203x + 205 - 205x = 204.4
-2x + 205 = 204.4
-2x = -0.6

x = 0.3
1-x = 0.7

Then the TI-205 would have the highest percentage and would be the most abundant.
You might be interested in
Why is seawater a better conductor of electricity than freshwater?
GenaCL600 [577]

Answer:

please refer to the attachment above;)

3 0
3 years ago
Read 2 more answers
What is the purpose of light energy?
zimovet [89]
The sun gives off light energy to help plants photosynthesize and make food
8 0
2 years ago
How do ice and water on the ground affect incoming solar radiation?
Rufina [12.5K]

Answer:

Ice and water on the ground affect incoming solar radiation by reflecting 4 percent of solar radiation that reaches the surface. ... When the sun angle is high and water is liquid notice, there is less reflection that takes place.

8 0
3 years ago
Read 2 more answers
Hi guys, my question is:
guapka [62]

Answer:

See Explanation Below

Explanation:

A) The rate law can only be on the reactant side and you can only determine it after you get the net ionic equation because of spectators cancelling out. So in this case the rate law is k=[CH3Br]^1 [OH-]^1. The powers are there because the rxn is first order.  

B) Since the rxn is first order anything you do to it will be the exact same "counter rxn" per say so since you are decreasing the OH- by 5 the rate will decease by 5

C) The rate will increase by 4 since you are doubling both you have to multiply them both.

8 0
3 years ago
1. Do you think that the lightbulb and the Moon spheres are "to scale" compared to the real
Tems11 [23]

Answer:

Yes

Explanation: Had a question like this and I said yes and got it right

3 0
2 years ago
Other questions:
  • In a step-down transformer, which side has more wire loops?
    15·2 answers
  • Naturally occurring boron has an atomic weight of 10.811. Its principal isotopes are 10B and 11B. Part A What is the abundance (
    10·1 answer
  • When water boils and evaporates, it reaches what temperature?
    12·1 answer
  • How does energy transfer from the sun to earth and the atmosphere
    6·1 answer
  • The student is now told that the four solids, in no particular order, are calcium bromide (CaBr2), sugar (C6H12O6), benzoic acid
    7·2 answers
  • Elements are arranged in groups by similar atomic structure on the periodic table. This allows for an element's properties to be
    7·1 answer
  • What is one ecosystem you can think of? What non-living and living things are found in your ecosystem?
    11·1 answer
  • When 1.04g of cyclopropane was burnt in excess oxygen in a bomb calorimeter, the temperature rose by 3.69K. The total heat capac
    13·1 answer
  • QUICKLY!!!!!
    15·1 answer
  • So, a gas, and an
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!