Chemistry, 27.06.2019 02:00, robert7248
The half-life for the process 238u→206pb is 4.5×109 yr. a mineral sample contains 61.0 mg of 238u and 15.5 mg of 206pb. part a what is the age of the mineral
Answers: 3
Chemistry, 22.06.2019 16:30, Eddie997
For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.
Answers: 2
Chemistry, 23.06.2019 01:20, hflores0001
How can parts of a solution be separated by chromatography?
Answers: 1
The half-life for the process 238u→206pb is 4.5×109 yr. a mineral sample contains 61.0 mg of 238u an...
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