Chemistry, 15.09.2021 01:40 destinyw329
A radioactive substance has a half-life period of 30 days. Calculate the time required for three- fourths of the original number of atoms to disintegrate.
A. 60 days
B. 12 days
C.90 days
D. 30 days
Answers: 1
Chemistry, 22.06.2019 12:10
Consider the reaction: n2(g) + o2(g) ⇄ 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?
Answers: 3
Chemistry, 23.06.2019 04:40
Equal numbers of moles of he(g), ar(g), and ne(g) are placed in a glass vessel at room temperature. if the vessel has a pinhole-sized leak, which of the following will be true regarding the relative values of the partial pressures of the gases remaining in the vessel after some of the gas mixture has effused?
Answers: 1
A radioactive substance has a half-life period of 30 days. Calculate the time required for three- fo...
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