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xeze [42]
4 years ago
9

Which statement is true of unstable isotopes?

Chemistry
1 answer:
grin007 [14]4 years ago
7 0

<u>Answer: </u>The correct answer is Option D.

<u>Explanation:</u>

Unstable isotopes are defined as the isotopes which have excess of neutrons as compared to the stable form of the nucleus of an atom.

These isotopes attain stability by undergoing a spontaneous nuclear decay. The isotopes which are unstable have another name and are known as radioactive isotopes or radioisotopes.

These isotopes undergoes decay by 4 processes: Alpha decay, beta decay, gamma emission and positron decay.

Hence, the correct answer is option D.

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A solution of a compound with a known extinction coefficient of 23,100 M-1cm-1 has an absorbance of 0.735 in a 1.30cm path lengt
olya-2409 [2.1K]

Answer:

2.448 * 10^-5M

Explanation:

To calculate the concentration of the solution, we apply the Beer Lambert law equation.

That is A = £LC

Where £ represents the molar extinction coefficient.

We identify the values as follows:

A = absorbance = 0.735

L = cell length = 1.30

£ = 23100

c = concentration = ?

Rearranging the equation, c = A/£L

c = 0.735/(23,100 * 1.3)

c = 2.448 * 10^-5 M

3 0
4 years ago
1. Marie left her briefcase at home and had to return to get it. At which point did she turn back around to go home? ​
Georgia [21]

Answer:

She turned back at the point at which she forgot she left her briefcase. If this isn't the correct answer, please be more specific in the question.

Explanation:

5 0
2 years ago
A
AleksandrR [38]

Answer:

don't know sorry

Explanation:

so sorry

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3 years ago
How do gases compare with liquids and solids in term of the distance between their molecules?
SIZIF [17.4K]

Answer:

found this hope it helps

Explanation:

Gas particles are spread farther apart and move faster than solids or liquids. ... The average speeds and kinetic energies of gas particles increase with an increase in temperature and decrease with a decrease in temperature.

6 0
3 years ago
Sugar dissolved in water is an example of which solute-solvent combination?
AURORKA [14]
Water is soluting the suger WATER
8 0
3 years ago
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