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
Advocard [28]
3 years ago
12

What percentage of the atoms in a sample of plutonium-238 will remain radioactive after 263.1 years

Chemistry
1 answer:
krok68 [10]3 years ago
7 0
We use the exponential decay formula to solve for the percentage of atoms in a sample of Plutonium-238 will remain radioactive after 263.1 years.
We are given with a half-life of 87.7 years and so, we can get the decay constant:
k = ln 2 / 87.7
k = 0.0079
A/A0 = exp(-kt)
A/A0 = exp (-0.0079(263.1))
A/A0 = 0.125
or
12.5%
You might be interested in
If a bond is currently trading at its face​ (par) value, then it must be the case​ that: A. the​ bond's yield to maturity is equ
Natasha2012 [34]

Answer:

A. the​ bond's yield to maturity is equal to its coupon rate.

Explanation:

The coupon rate is that amount of bond measured on the loan amount whereas the maturity yield is the rate held up to the settlement date and the investment arise up to the maturity date.

Since the bond is currently trading at its face value that means the bond price is equal to the face or par value

So, the appropriate option is A.

5 0
3 years ago
Read 2 more answers
Help me please i don’t understand the problem
brilliants [131]

Answer:

Atoms are neither created or destroyed.

Explanation:

The end result of a chemical change does not create or destroy any atoms. Matter cannot be created or destroyed, meaning the same amount of atoms exist before and after the change.

5 0
4 years ago
Read 2 more answers
The number of covalent bonds that an
amm1812

Answer: please make the question more understandable

Explanation:

4 0
3 years ago
How many phases does a solution have?explain
Vikki [24]
Did you perhaps mean the phase of matter? If so, then a solution has only one phase of matter: liquid. It is always almost always liquid because solutions are made up of a solvent and a solute and a solvent is always a liquid. Though, some may come in an emulsion form, but still it can be considered as liquid
4 0
4 years ago
an ideal gas is at a pressure 1.00 x 10^5 N/m^2 and occupies a volume 11.00 m^3. If the gass is compressed to a volume of 1.00 m
bogdanovich [222]

Answer:

P_2=1.1x10^6Pa

Explanation:

Hello.

In this case, we can solve this problem by applying the Boyle's law which allows us to understand the pressure-volume behavior as a directly proportional relationship:

P_1V_1=P_2V_2

In such away, knowing the both the initial pressure and volume and the final volume, we can compute the final pressure as shown below:

P_2=\frac{P_1V_1}{V_2}

Consider that the given initial pressure is also equal to Pa:

P_2=\frac{1.00x10^5Pa*11.00m^3}{1.00m^3}\\ \\P_2=1.1x10^6Pa

Which stands for a pressure increase when volume decreases.

Regards.

4 0
3 years ago
Other questions:
  • 1- What are the two types of neurons?
    14·1 answer
  • Given the following acids and their Ka values: Phenol, C6H5OH Ka = 1.00 × 10-10 Acetic acid, CH3CO2H Ka = 1.80 × 10-5 Nitrous ac
    8·1 answer
  • Why should scientists control most possible variables in their experiments?
    8·1 answer
  • How many obits are there
    7·1 answer
  • What is the new pressure if the temperature outside is 296k and his weight causes the tire's volume to drop to 2.0 liters
    14·1 answer
  • Match each body system with its main organ.
    9·1 answer
  • if you want to know the identity of an unknown substance, what type of formula would you most likely want to know?
    5·2 answers
  • Fre3 points <br>Leave a random fact
    5·1 answer
  • What is the frequency of 704 nm light?
    7·1 answer
  • What is the main characteristics that makes a biome a desert?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!