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
masya89 [10]
3 years ago
5

An element has two isotopes, A and B, with mass numbers of 32.0 and 33.0 respectively. The relative atomic mass is 32.3. The per

centage abundance of the two isotopes is:
a) A - 20% B - 80%

b) A - 25% B - 75%

c) A - 80% B - 20%

d) A - 70% B - 30%

e) A - 50% B - 50%
Chemistry
2 answers:
vlada-n [284]3 years ago
7 0

Answer:

d) A - 70% B - 30%

Explanation:

If x is the abundance of A, and 1−x is the abundance of B, then:

x (32.0) + (1−x) (33.0) = 32.3

32x + 33 − 33x = 32.3

33 − x = 32.3

x = 0.7

The abundance of A is 70%, and the abundance of B is 30%.

Stolb23 [73]3 years ago
7 0

D is the correct answer

You might be interested in
Who has the most sensitive taste buds?<br><br> the elderly<br> adults<br> babies<br> teenagers
Molodets [167]

Answer:

babies have the most sensitive taste buds

3 0
2 years ago
The Big Bang theory states that ________.
cluponka [151]

I believe the correct answer is B

8 0
3 years ago
Which of the following is an example of heat transfer through conduction?
slava [35]
A pan on the stove getting hot, because the pan is conducting the heat from the stove.
7 0
3 years ago
Read 2 more answers
1. 4Na + 02 → 2Na20<br> find the reaction
Vadim26 [7]

oxidation reaction

Explanation:

2 Na2O → 4 Na + O2

This is an oxidation-reduction (redox) reaction:

4 NaI + 4 e- → 4 Na0(reduction)

2 O-II - 4 e- → 2 O0(oxidation)

Na2O is an oxidizing agent, Na2O is a reducing agent.

6 0
2 years ago
5
sineoko [7]

Answer:

this answer is b no u can it very easy

Explanation:

because solid and liquid can compress easily

plz support me

4 0
3 years ago
Read 2 more answers
Other questions:
  • Instrumental methods need only a microscopic sample to return an accurate result. Why is this so?
    7·1 answer
  • Does everything that you can see fit the definition for matter
    5·1 answer
  • A potassium bromide solution is 8.34% potassium bromide by mass and its density is 1.03 g/ml. what mass of potassium bromide is
    6·1 answer
  • 18. This reaction uses hydrogen
    9·1 answer
  • Why do we not currently use more renewable energy in the U. S. ​
    12·2 answers
  • Find the mass (in g) of 1.00 atom of lead.
    7·1 answer
  • PLS HELP FOR FINAL!!!!!!!!!!!!!!
    11·2 answers
  • If you blank water it turns into<br> Blank to form gas.
    12·1 answer
  • If the sun is next to the earth on the left, and the moon is next to the earth on the right, what type of tide is it?
    13·1 answer
  • Ammonia is alkaline gas and it is highly soluble in water. Explain why the solution of ammonia in water is alkaline.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!