An original sample of the radioisotope fluorine-21 had a mass of 80.0 milligrams. Only 20.0 milligrams of this original sample remain unchanged after 8.32 seconds. What is the half-life of fluorine-21?
(1) 1.04 s (3) 4.16 s
(2) 2.08 s (4) 8.32 s
Answers (1)
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “An original sample of the radioisotope fluorine-21 had a mass of 80.0 milligrams. Only 20.0 milligrams of this original sample remain ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
Two different isotopes of the same element have : (t/f) - Equal nuclear charges - Similar radioactive decay properties - Equal mass of an atom - Different number of neutrons - Equal mass of a nucleus
Answers (1)
How many g/l of barium chloride are in 0.5 M
Answers (1)
Which environmental changes occur faster? A. volcanic eruption B. regrowth of forest after volcanic eruption
Answers (1)
What is symbol for ruthenium
Answers (2)
What is the inner core description
Answers (1)
New Questions in Chemistry
Amino acid to protein as?
Answers (1)
How many moles of metallic aluminum (al) could be produced from al3 + at a current of 0.09 amperes for 964,853 seconds?
Answers (1)
At a certain temperature this reaction follows second-order kinetics with a rate constant of 14.1 M-1s-1 : 2SO3g - -> 2SO2g + O2g Suppose a vessel contains SO3 at a concentration of 1.44M. Calculate the concentration of SO3 in the vessel 0.
Answers (1)
A fusion reaction takes places between carbon and another element. Neutrons are realeased, and a different element is formed. The different element is?
Answers (1)
What is the molarity of a solution prepared by dissolving 1.56 g of gaseous hcl (molar mass = 36.5 g into enough water to make 26.8 ml of solution?
Answers (1)