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
vodka [1.7K]
3 years ago
6

The image shows a representative sample of 50 atoms of a fictious element, called lemonium ( Le ). Lemonium consists of three is

otopes. The red spheres are Le – 19 , the light blue spheres are Le – 17 , and the dark blue spheres are Le – 15 . Determine the percent natural abundance of each of the three isotopes.
Chemistry
1 answer:
Keith_Richards [23]3 years ago
3 0

The percentage abundance is a measure of ratio of the number of each isotope and the total number of the element. The percentage abundance of each isotope is :

  • Le - 19 = 0.32
  • Le - 17 = 0.44
  • Le - 15 = 0.24

Number of each isotope in the sample :

  • Le - 19 = 16
  • Le - 17 = 22
  • Le - 15 = 12

Total number of sample = 50

The percentage natural abundance of the isotopes can be calculated :

Number of each isotope ÷ total number of sample

Percentage abundance of Le isotopes

  • Le - 19 = \frac{16}{50}=0.32
  • Le - 17 = \frac{22}{50}=0.44
  • Le - 15 = \frac{12}{50}=0.24

Therefore, the percentage abundance of Le - 19, Le - 17 and Le - 15 isotopes are 0.32, 0.44 and 0.24 respectively.

Learn more : brainly.com/question/16078327

You might be interested in
Help me please!!!!!!!!
ale4655 [162]

Answer:

that's a hard one

Explanation:

6 0
3 years ago
Read 2 more answers
Electrons spill in shells in the nucleous the closest shell (n=1) can contain the maximum of. Electrons
stiks02 [169]
The answer is 2 electrons I believe!
8 0
3 years ago
Ameaba is which protozoan​
Vikki [24]

Answer: genus

Explanation:

Amoebas do not form a single taxonomic group; instead, they are found in every major lineage of eukaryotic organisms. Amoeboid cells occur not only among the protozoa, but also in fungi, algae, and animals.

4 0
3 years ago
Read 2 more answers
Solve for b if R = x(A + B)
Tatiana [17]

This is what I got. Hope it helps :)

7 0
3 years ago
Catalytic converters made of palladium (pd) reduce automobile pollution by catalyzing the reaction between unburned hydrocarbons
Doss [256]
Unburned hydrocarbon on reacting with oxygen undergoes combustion reaction. However, the activation energy of this reaction is significantly high. When a catalyst like Pd is added to the reaction system, it provides active sites for the reaction to occur. It acts are a heterogeneous catalyst. It is pertinent of note that catalyst is refereed as heterogeneous, when it exist in different phase as compared to reactant and products. In present case, reactants and products are in gas phase, while catalyst is in solid phase. Due to availability of larger surface area at active site of Pd, activation energy of reaction decreases and decrease in activation energy favors higher reaction rates. 
3 0
3 years ago
Other questions:
  • How does the internal structure of the Earth affect the surface of the planet?
    5·1 answer
  • Can someone plz help me with Visualize it! 5 plz I will mark them Brainliest
    12·1 answer
  • How many moles of c9h8o4 are in a 0.600 g tablet of aspirin?
    12·2 answers
  • I NEED HELP. PLEASE HELP ME!!!!
    5·1 answer
  • Looking at the structure of caffeine, explain why it is very soluble in a non-polar solvent and a little soluble in water.
    14·1 answer
  • How many atoms is 50 g of He?
    7·1 answer
  • What volume of a 2.10 M NaCl solution is
    9·1 answer
  • H E L P <br> M E H <br> P L E A S E
    9·1 answer
  • The equilibrium constant, Kc, for the following
    13·1 answer
  • What is the final volume, in milliliters, when 5.80 mL of 25.0 %(m/v) NaOH solution is diluted to give a 3.50 %(m/v) NaOH soluti
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!