Uranium-238 decays very slowly. its half-life is 4.47 billion years.
what percentage of a samp...
Chemistry, 27.08.2019 03:30, srsnider2017
Uranium-238 decays very slowly. its half-life is 4.47 billion years.
what percentage of a sample of uranium-238 will remain after 13.4 billion years?
i have to test after 3 !
Answers: 1
Chemistry, 22.06.2019 02:50, Jerrikasmith28
The conventional equilibrium constant expression (kc) for the system below is: 2icl(s) ⇄ i2(s) + cl2(g) [cl2] ([i2] + [cl2])/2[icl] [i2][cl2]/[icl]2 none of the listed answers are correct [i2][cl2]/2[icl]
Answers: 2
Chemistry, 22.06.2019 13:00, rome58
Lab reagent, hypothesis test. a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl. these six measurements are assumed to be an srs of all possible measurements from solution. they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution. carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.
Answers: 1
Chemistry, 22.06.2019 23:00, soccerplayer17
What is the number of neutrons in an atom with atomic mass of 35
Answers: 2
Mathematics, 08.06.2020 21:57
Social Studies, 08.06.2020 21:57
Mathematics, 08.06.2020 21:57