Asked Jan 11, 2020

 The half-life for the radioactive decay of C-14 is 5730 years and is independent of initial concentration. How long will it take for 25% of the C-14 atoms in a sample of C-14 to decay? If a sample of C-14 initially contains 1.5 mmol of C-14, how many millimoles will be left after 2255 years? 


Expert Answer

Step 1
Chemistry homework question answer, step 1, image 1
Step 2
Chemistry homework question answer, step 2, image 1
Step 3
Chemistry homework question answer, step 3, image 1

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



Related Chemistry Q&A

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

Q: Read each description in the first column of the table below. If any chemical element with atomic nu...

A: All known elements are placed in the long form of the periodic table. There are 18 vertical columns ...


Q: What are the key differences in the way that alkanes, alkenes, and alkynes are named?<

A: The main difference between alkanes, alkenes and alkynes is ‘alkanes contain only single bonds, alke...


Q: Only two isotopes of copper occur naturally, 63Cu (atomic mass = 62.9296 amu; abundance 69.17%) and ...

A: It is given that :Atomic mass of 63 Cu = 62.9296 amuNatural abundance of 63 Cu = 69.17 %Atomic mass ...


Q: >How do fibrous proteins and globular proteins differ?

A: Proteins are structurally classified into two types, namely: fibrous proteins and globular proteins....


Q: The molar mass of a volatile substance was determined by the Dumas-bulb method described in Exercise...

A: Given,Mass of the gas = 0.846 gPressure 752 torr,Volume = 354 cm3 = 0.354 LTemperature = 100 oC = 27...


Q: What are optical isomers? How do the properties of optical isomers differ from one another?

A: Click to see the answer


Q: What is unique about carbon and carbon-based compounds? Why did life evolve around carbon?

A: Click to see the answer


Q: A 20.0-mL sample of 0.125 M HNO3 is titrated with 0.150 M NaOH. Calculate the pH for at least five d...

A: HNO3 is a strong acid and NaOH is a strong base. Before the addition of NaOH the system is a strong ...


Q: For each statement, indicate whether it is true or false. (a) The greater the orbital overlap in a b...

A: (a)Given statement: “The greater the orbital overlap in a bond, the weaker the bond”.Covalent bond i...