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
Studentka2010 [4]
3 years ago
14

Thallium consists of 29.5%TI-203 and 70.5%TI-205. What is the relative atomic mass of thallium?

Chemistry
2 answers:
VladimirAG [237]3 years ago
6 0
Atomic mass :

29.5 * 203 + 70.5 * 205 / 100 = 

5988.5 + 14452.5 / 100 = 

20441 / 100 = 204.41 u

atomic mass of Thallium <span>204.41 u
</span>
hope this helps!
Sliva [168]3 years ago
3 0

Answer:

Thallium atomic mass is 204.41.

Explanation:

TI-203 and TI-205 are isotopes of Thallium, it means elements that differs in the number of neutrons they have. To estimate the atomic mass of Thallium, you have to sum the mass of each isotope (203 or 205), multiplied by its abundance percentage and divided by 100&.

Thallium Atomic mass = [(203 x 29.5 %)/ 100%] + [(205 x 70.5 %)/100%]

⇒Thallium Atomic mass = 204.41.

Summarizing, Thallium atomic mass is 204.41.

You might be interested in
An example of an extensive property of matter is?<br>temp<br>pressure<br>mass<br>hardness
Gelneren [198K]
I believe the answer is mass :) 
7 0
3 years ago
10. Malaria, a type of parasite, infects 500 million people each year by infecting the red
raketka [301]

Answer:

c. although both are living organisms, parasite depend on the cells of living things to reproduce

8 0
3 years ago
Write an equation that shows the formation of a chromium(ii) ion from a neutral chromium atom.
daser333 [38]
The   equation  that  shows  the  formation  of  chromium (ii) ion  from  neutral  chromium  atom  is  as  follow
Cr ---> cr^2+   +  2e-
Cr^2+ is  the  chromium  ion   with  oxidation  state  of  two  which  is  one  of  the  common  ion  of  chromium.  Other  common  ion   of  chromium  include  chromium  of  oxidation  state  6  and  3

8 0
4 years ago
Read 2 more answers
How many moles of carbon dioxide are produced when 23.0 g of C3H2O3 is burned during the
Mars2501 [29]

Moles of Carbon dioxide : 0.75

<h3>Further explanation</h3>

Given

23 g C₃H₈O₃

Required

Moles of Carbon dioxide

Solution

Reaction

2C₃H₈O₃ + 7O₂ → 6CO₂ + 8H₂O

mol C₃H₈O₃ :

= mass : MW

= 23 g : 92,09382 g/mol

= 0.24975

From the equation, mol ratio of C₃H₈O₃ : 3CO₂ = 1 : 3, so mol CO₂ :

= 3/1 x mol C₃H₈O₃

= 3/1 x 0.24975

= 0.74925≈0.750 mol

5 0
3 years ago
Không tính toán cụ thể mà lý luận để :
kotykmax [81]

Answer:

c) Tìm những chất có hàm lượng đồng bằng nhau trong 4 chất : CuO, Cu2O, CuS, Cu2S.

Explanation:

3 0
3 years ago
Other questions:
  • A sample consisting of 1.00 mol Ar is expanded isothermally at 0 degrees C from 22.4 to 44.8 L (a) reversibly, (b) against a con
    13·1 answer
  • Which is a property of a neutron?
    10·1 answer
  • Which of two factors influence the weight of an object due to gravitational pull?
    7·2 answers
  • Which statement below is not true of decomposition reactions?
    15·1 answer
  • What is the order of the phases on a heating curve
    6·1 answer
  • How hot will a 2.3 liter balloon have to get to expand to a volume of 7 L? Assume that the initial temperature of the balloon is
    10·1 answer
  • Please explain to me!!!
    8·1 answer
  • In a pea plant, tall (T) is dominant to short (t), and green peas (G) are dominant to yellow peas (g).
    6·1 answer
  • Pls explain<br> help would be appreciated
    9·1 answer
  • What does the NaBr + Cl₂ represent<br> in the reaction?<br> NaBr + Cl₂ →&gt;&gt;<br> NaCl + Br₂
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!