Chemistry, 12.05.2021 19:00 rileyeddins1010
1. Your original sample of Manganese-56 is 20.0 mg. How much is left after 3 half
lives? Remember to round to the correct number of significant figures and use units (mg).
2. Tritium is a radioactive form of hydrogen with a half-life of 12.3 years. How much of the 48.0 mg of tritium is still radioactive after 98.4 years?
Make sure to round to the correct number of significant figures and use units (mg).
3. How much of a 1.00 g polonium-214 sample remains after 818 microseconds? The half-life of polonium-214 is 163.7 microseconds.
Make sure to round to the correct number of significant figures and use units (g).
Answers: 1
Chemistry, 23.06.2019 05:00, MoneyMike42
Select the statement that describe chemical properties a. antacid tablets neutralize stomach acid b. helium is the lightest monatomic element c. water freezes at 0 celsius d. mercury is liquid at room temperature
Answers: 3
Chemistry, 23.06.2019 07:00, mahogany1956
What is the difference between covalent bonds and ionic bonds? covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the electrical attraction between charged atoms. covalent bonds involve the transfer of electrons between charged atoms; ionic bonds involve the sharing of electrons between atoms. covalent bonds involve the sharing of pairs of electrons between atoms; ionic bonds involve the sharing of single electrons between atoms. covalent bonds involve the sharing of electrons between atoms; ionic bonds involve the sharing of protons between charged atoms.
Answers: 1
1. Your original sample of Manganese-56 is 20.0 mg. How much is left after 3 half
lives? Remember t...
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