Question
Asked Oct 23, 2019
141 views

One of the nuclides in spent nuclear fuel is U-235, an alpha emitter with a half-life of 703  million years.  How long will it take for the amount of U-235 to reach 10.0% of the initial amount?

 

Why is it not ln(90/100) instead of ln(10/100)?

check_circle

Expert Answer

Step 1

The relationship between the decay constant and the half-life period is given below.

fullscreen
Step 2

The decay constant of U-235 can be calculated as shown below.

fullscreen
Step 3

The nuclear disintegration time can be calculated as shown below.

...
fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Chemistry

Inorganic Chemistry

Related Chemistry Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: Methane, CH4, effuses through a small opening in the side of a container at a rate of 1.30 x 10-8 mo...

A: Given:Rate of diffusion of Methane = 1.30 x 10-8 mol/s. = r1Rate of diffusion of unknown = 9.19 x 10...

question_answer

Q: Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of H2SO4 an...

A: A molecular equation can be defined as the balanced chemical equation that is used to express the io...

question_answer

Q: When a 0.850 g sample of a mixture of volatile hydrocarbons is burned in a bomb calorimeter with a h...

A: Combustion reactions are those chemical reactions in which hydrocarbons are burnt in the presence of...

question_answer

Q: Which of these molecules contain polar bonds, and which contains nonpolar bonds? Ozone, Water, Carbo...

A: Polarity of a bond is due to the difference in electro-negativities of atoms presented in it.

question_answer

Q: How to balance this chemical equation? KO2(s) +H2O(l) ----> KOH(aq) + O2(g) + H2O2

A: Balanced chemical equation of a reaction is written according to law of conservation of mass. Thus, ...

question_answer

Q: The effusion rate of an unknown gas is found to be 32.5mL/min. Under the identical conditions the ef...

A: First, using Graham’s Law the molar mass of given gas is determined.

question_answer

Q: A volume of 110. mL of H2O is initially at room temperature (22.00 ∘C). A chilled steel rod at 2.00 ...

A:  Heat lost by the water = heat gained by the steel rod Q = mcΔTQ is the quantity of heat,m = mass in...

question_answer

Q: A 3.619 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of th...

A: In a calorimeter, heat absorbed by calorimeter and the heat released by the substance is equal.Heat ...

question_answer

Q: Nitrogen content of an organic compound can be determined by the Dumas Method. The compound is passe...

A: Given: Mass = 0.225g Volume = 27.8mL of N2 P = 730 Torr Vapour pressure of H2O = 23.8Torr We need to...