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
Vikki [24]
3 years ago
14

Naturally occurring indium has two isotopes, indium-113(112.9040580 amu) and Indium-115 (114.9038780 amu. The atomic mass of ind

ium is 114.82 amu. What is the percent of indium-115? a)4.32% b)48.4% c)95.7% d)0.973%
Chemistry
1 answer:
Kruka [31]3 years ago
5 0

Answer:

The answer to your question is: letter c (96%)

Explanation:

Indium -113 (112-9040580 amu) ₁₁₃In

Indium-115 (114.9038780 amu)  ₁₁₅In

Atomic mass of Indium is 114.82 amu ₁₁₄.₈₂In

Formula

Atomic mass = m₁(%₁) +m₂(%₂)  / 100

%₁ = x I established this is an equation

%₂ = 100 - x

Substituting values

114.82 = 112.8040x + 114.9039(100-x) /100    and know we expand and simplify

114.82 = 112.8040x + 11490.39 - 114.9039x  /100

11482 = 112.8040x -114.9039x +11490.39

11482 - 11490.39 = 112.8040x -114.9039x

-8.39 = -2.099x

x = 3.99

Then % of Indium-115 = 100 - 3.99 = 96

You might be interested in
Molecular formula: C19H16
eimsori [14]
Is the something missing from the question
8 0
3 years ago
What volume (L) will 3.56 mol NH3 occupy at STP. (1 point)
mart [117]

Answer:

B

Explanation:

I hope it helps you good luck

7 0
3 years ago
The number of protons in an atom's nucleus determines its
Nataly [62]
Number of proton present in the nucleus determines the atomic number of an element. It determines <span>chemical properties, which is why all atoms with proton count (atomic number) 6 are carbon</span>
8 0
3 years ago
Read 2 more answers
What is a conjugate acid-base pair?
kipiarov [429]

Answer:

B

Explanation:

8 0
3 years ago
Read 2 more answers
What does Na2S formula mean?; What is the two in Na2S called?; How do you write Na2S?; What state of matter is Na2S?
xxTIMURxx [149]

The chemical compound sodium sulfide has the formula Na2S. It is written as Na_{2}S. It has a crystalline state. Na is followed by a two or 2. this indicates that the molecule has two of the specified element's atoms.

There is just one of these because there is no number following the S.

In all, this molecule consists of one sulfur atom and two sodium atoms.

A compound's chemical formula, which uses symbols for combining atoms, reveals the composition of the complex. We require the valency of the combining parts in order to write the formula.

The sodium sulfide chemical formula must be written down. So sodium and sulfur make up the two elements in the chemical. Sodium has a valency of +1, while sulfur has a +2.

For more information on sodium sulfide kindly visit to

brainly.com/question/10762285

#SPJ4

8 0
1 year ago
Other questions:
  • Write the electron configuration for each atom<br><br> A. Carbon<br> B. Argon<br> C. Nickel
    8·1 answer
  • Balance the following redox reaction in acidic solution: H+(aq)+Zn(s)→H2(g)+Zn2+(aq)
    9·1 answer
  • What alcohol is formed when the alkene is treated with h2o in the presence of h2so4? qs14?
    9·1 answer
  • Water can be a solid
    8·2 answers
  • Use the drop-down menus to classify each of the following as an addition, substitution, elimination, or
    12·1 answer
  • Difference between acids and bases in terms of ions
    8·2 answers
  • In the NCl3 molecules there are banded pairs of electrons and nonbonded pairs of electrons attached to central atom?
    9·1 answer
  • What is the oxidation state of Sin HSO_2-? A. +5 B. +6 C. +9 OD. +7​
    13·1 answer
  • How many moles of oxygen gas occupy 67.2 L of volume at STP?<br> A 0.333<br> B 3.00<br> C 1.00
    7·1 answer
  • Why can’t you see the stars very well at night like you could 50 years ago
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!