Ask Question
ChemistryChemistry
3 January, 19:18

The half-life of a radioactive isotope is 20 minutes. What is the total amount of 1.00 g of sample of this isotope remaining after 1 hour?

+4
Answers (1)
  1. 3 January, 19:20
    0
    So since every 20 mins the mass will be cut in half (and that happens 3 times), you have just got to divide 1g by 2, 3 times.

    after 20 mins the mass will be. 5

    after 40 mins the mass will be. 25

    Answer: After 1 hour the mass will be. 125g
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “The half-life of a radioactive isotope is 20 minutes. What is the total amount of 1.00 g of sample of this isotope remaining after 1 hour? ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
As the temperature of a liquid increases, the solubility of a liquid in that liquid A. increases. B. decreases. C. stays the same. D. either increases or decreases, depending upon the liquid.
Answers (1)
A sugar cube in a test tube is heated over a Bunsen burner. The sugar cube turns black and has less mass than before it was heated. These changes occur because the sugar has- A. become hydrated B. reacted chemically C. melted D. boiled
Answers (1)
Aluminum and iron (II) oxide combine to form iron and aluminum oxide.
Answers (1)
A gas mixture of hydrogen, helium and argon was measured to have the following composition. If the gas mixture only contain the above three gases, what is the mass fraction of argon in this mixture?
Answers (1)
What common household chemical is produced from the haber process?
Answers (1)
New Questions in Chemistry
One isotope has 6 protons and 8 neutrons which reference names this isotope
Answers (1)
When an atom that has no charge loses two electrons, it becomes a: A: positive ion. B: negative ion. C: positive isotope. D: negative isotope.
Answers (1)
A 155.0 9 piece of copper at 182 °C Is dropped into 2500 g of water at 23.9 °C. (The specific heat of copper is 0.385 1/9°C.) Calculate the final temperature of the mixture. (Assume no heat loss to the surroundings.)
Answers (1)
Which state of matter is characterized by having an indefinite shape, but a definite volume? Gas Liquid Solid None of the above
Answers (1)
What metric unit is used to measure distance?
Answers (2)
Home » Chemistry » The half-life of a radioactive isotope is 20 minutes. What is the total amount of 1.00 g of sample of this isotope remaining after 1 hour?
Sign Up Forgot Password?