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
lyudmila [28]
4 years ago
6

The element silver has an atomic weight of 108 and consists of two stable isotopes silver-107 and silver-109. The isotope silver

-107 has a mass of 107 amu and a percent natural abundance of 51.8 %. The isotope silver-109 has a percent natural abundance of 48.2 %. What is the mass of silver-109
Chemistry
1 answer:
Illusion [34]4 years ago
6 0

Answer:

109

Explanation:

Let silver-107 be isotope A

Let silver-109 be isotope B

Let silver-107 abundance be A%

Let silver-109 abundance be B%

The following data were obtained from the question:

Atomic weight of silver = 108

Mass of isotope A (silver-107) = 107

Abundance of isotope A (silver-107) = 51.8%

Abundance of isotope B (silver-109) = 48.2%

Mass of isotope B (silver-109) =?

Now, we shall determine the mass silver-109 as follow:

Atomic weight = [(Mass of A x A%)/100] + [(Mass of B x B%)/100]

108 = [(107 x 51.8)/100] + [(Mass of B x 48.2)/100]

108 = 55.426 + (Mass of B x 0.482)

Collect like terms

Mass of B x 0.482 = 108 – 55.426

Mass of B x 0.482 = 52.574

Divide both side by 0.482

Mass of B = 52.574/0.482

Mass of B = 109

Therefore, the mass of silver-109 is 109.

You might be interested in
Consider a wooden chair and a balloon. What do these two
ICE Princess25 [194]

Answer:

D)

Explanation:

It is the most realistic

6 0
4 years ago
What have scientists been able to use to create the Geologic Time Scale?
dem82 [27]
The half-life of the carbon-14 isotope is used in dating fossils in a process called radiocarbon dating.

hope this is adequate. 
3 0
3 years ago
The decomposition of NH4HS is endothermic: NH4HS(s)⇌NH3(g)+H2S(g) Part A Which change to an equilibrium mixture of this reaction
shepuryov [24]

Explanation:

According to Le Chatelier's principle, any disturbance caused in an equilibrium reaction will shift the equilibrium in a direction that will oppose the change.

As the given reaction is as follows.

       NH_{4}HS(s) \rightleftharpoons NH_{3}(g) + H_{2}S(g)

(a)  When increase the temperature of the reactants or system then equilibrium will shift in forward direction where there is less temperature. It is possible for an endothermic reaction.

Thus, formation of H_{2}S will increase.

  • (b)  When we decrease the volume (at constant temperature) of given reaction mixture then it implies that there will be increase in pressure of the system. So, equilibrium will shift in a direction where there will be decrease in composition of gaseous phase. That is, in the backward direction reaction will shift.

Hence, formation of H_{2}S will decrease with decrease in volume.

  • When we increase the mount of NH_{4}HS then equilibrium will shift in the direction of decrease in concentration that is, in the forward direction.

Thus, we can conclude that formation of H_{2}S will increase then.

3 0
3 years ago
What particles in an atom are involved in nuclear reactions
VikaD [51]

Answer:

Explanation:

Electrons are the negatively charged particles of an atom that are involved in chemical reactions. They are located outside the nucleus of an atom

8 0
3 years ago
What is included in a compaarative investigation
Minchanka [31]

a scientific question

6 0
3 years ago
Other questions:
  • The atomic number of an atom is determined by the number of
    12·2 answers
  • What type of matter would vaporization and condensation fall under? Solid Liquid or gas?
    13·1 answer
  • Write the net ionic equation for KNO2 + HCl -> KCl + HNO2
    11·1 answer
  • Why can carbon bond to many elements simultaneously? because its +4 valence forms ionic bonds because it has a natural ionic cha
    6·2 answers
  • The equilibrium constant for the reaction:
    9·1 answer
  • Hi does anyone have the data table answers for the Charles Law Lab Report from Edge?
    13·1 answer
  • Do you think crystals formed in conditions that were stable or did they change often?
    12·1 answer
  • The photograph shows the most abundant substance on Earth's su Which fact about this substance tells you that it is a compound?
    8·2 answers
  • Can someone list these in correct order? from least brigehst to brightest?​
    12·1 answer
  • What is the pOH of a solution if the pH is 3.84?<br><br> pOH= (round to 2 decimal places)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!