(a) 0.807 fraction of the sample will remain 3. 80 yr after its preparation of tritium.
<h3>What is half life?</h3>
Half life is the time taken for the radioactivity of a substance to fall to half its original value whereas mean life is average lifetime of all the nuclei of a particular unstable atomic species.
So if a radioactive element has a half life of one hour, this means that half of it will decay in one hour. After another hour, half of the remaining material will decay.
Example:
The radioactive isotope cobalt-60, which is used for radiotherapy, has, for example, a half-life of 5.26 years.
Tritium half life = 12.32 (T half)
Formula :
- N/N₀ = (1/2) ^ t/T (N/N₀ = Fraction ratio)
(a) 0.807 fraction of the sample will remain 3. 80 yr after its preparation of tritium.
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At high temperature the gas would diffuse out as the pressure increases and at extremely low temperature the solid becomes compact.
Explanation:
The states of matter largely depends on the temperature. Any substance when crosses the threshold temperature its phase changes.
When temperature is low the motion of molecules is also low and internal energy also gets low. Solid have tendency of settling in low energy level and have highly compact molecules. At low temperature the solid would compress as molecules would be highly condensed.
Gas in the nature has its molecules quite far apart in matter. According to Kinetic theory of gases the increase in temperature causes rapid collisions of the gas molecule as the kinetic energy of molecules increases. The greater force of collision would cause increase in pressure of the container and increased diffusion rate.
Answer:
conceiving a child who is a bone marrow match to a living child.
Explanation:
Answer:
The actual free energy = 78.54 X 10⁻² J
Explanation:
Given standard free energy = 23.8 kJ/mol
Free energy due to the presence of fructose 1,6-bisphosphate (1.4 X 10⁻⁵ M)
= 1.4 X 10⁻⁵ M * (23800 J/mol)
= 33.32 X 10⁻² J
Free energy due to the presence of glyceraldehyde 3-phosphate (3 X 10⁻⁶ M)
= 3 X 10⁻⁶ M * (23800 J/mol)
=7.14 X 10⁻² J
Free energy due to the presence of dihydroxyacetone phosphate (1.6 x 10⁻⁵M)
= 1.6 x 10⁻⁵M * (23800 J/mol)
= 38.08 X 10⁻² J
The actual free = 33.32 X 10⁻² J + 7.14 X 10⁻² J + 38.08 X 10⁻² J
The actual free energy = 78.54 X 10⁻² J
On adding salt.....The boiling temperature increases.....
So ∆t= KB * molality
=O.52*(58/58)/4
= O.52*1/4
= 0.13
So increase is 100+.13=100.13°c