What is the half-life of a 12 g sample of radioisotope that decayed to 6 g in 28
years?
A. 28...
Chemistry, 21.05.2021 08:20 nightcorerules5
What is the half-life of a 12 g sample of radioisotope that decayed to 6 g in 28
years?
A. 28 years
B. 14 years
C. 56 years
D. 7 years
Answers: 3
Chemistry, 21.06.2019 20:40
Astudent made the lewis dot diagram of a compound shown. what is the error in the lewis dot diagram? a)an o atom should transfer all of its six electrons to mg because the formula is mgo b) both electrons of mg should be transferred to one o adam because the formula is mgo c) the electrons should be transferred from each o add him to capital mg because mg has fewer electrons d) the number of dots around mg should be four because it has to transfer two electrons to each o
Answers: 1
Chemistry, 22.06.2019 01:30
Aroller coaster car is traveling down a track at 22 m/s. the car has a mass of 2000 kg. what is the kinetic energy of the car? a) 22,000 j b) 968,000 j c) 484,000 j d) 44,000 j
Answers: 2
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