The table shows the amount of radioactive element remaining in a sample over a period of time.
Radioactive Decay Rate
Amount of Radioactive Sample
(grams) Time
(years)
56.0 0
47.1 400
39.6 800
33.3 1,200
28 1,600
Part 1: What is the half-life of the element? Explain how you determined this.
Part 2: How long would it take 312 g of the sample to decay to 9.75 grams? Show your work or explain your answer.
Answers: 2
Chemistry, 21.06.2019 17:50
An aqueous solution of potassium hydroxide is standardized by titration with a 0.194 m solution of hydrobromic acid. if 25.2 ml of base are required to neutralize 24.2 ml of the acid, what is the molarity of the potassium hydroxide solution? m potassium hydroxide
Answers: 2
Chemistry, 21.06.2019 18:50
Which term refers to a property that depends only on the amount of a substance? ©@
Answers: 2
Chemistry, 22.06.2019 01:30
There are main groups in the modern periodic table of elements
Answers: 1
Chemistry, 22.06.2019 04:30
Use the drop-down menus to answer each question. which runner finished the 100 m race in the least amount of time? which runner stopped running for a few seconds during the race? at what distance did anastasia overtake chloe in the race?
Answers: 1
The table shows the amount of radioactive element remaining in a sample over a period of time.
Radi...
English, 10.10.2020 19:01
History, 10.10.2020 19:01
Mathematics, 10.10.2020 19:01
History, 10.10.2020 19:01
Mathematics, 10.10.2020 19:01
History, 10.10.2020 19:01