Chemistry, 18.09.2019 12:30 natalie2sheffield
After three half-lives, a sample contains 20 grams of parent isotopes. how many grams of the parent isotope were present to start?
Answers: 2
Chemistry, 21.06.2019 18:00
Which is a character of nuclear fusion but not nuclear fission
Answers: 3
Chemistry, 22.06.2019 23:10
Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.
Answers: 3
Chemistry, 22.06.2019 23:30
If it is an isoelectronic series select true, if not select false. o2-, s2-, se2-, te2- na+, k+, rb+, cs+ n3-, p3-, as3-, sb3- ag, cd+, sn3+, sb4+ f-, cl-, br-, i- f-, ne, na+, mg2+ s2-, s, s6+
Answers: 1
After three half-lives, a sample contains 20 grams of parent isotopes. how many grams of the parent...
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