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@X@user.full_name@X@ @GMU: ACS-Radioactive substances decay by first-order kinetics. How many years would be required for a sample containing krypton-85 to decrease to 61.32% of its initial activity? The half-life of krypton-85 is 1.08e1 years.

@X@user.full_name@X@ @GMU: One mole of CH4 gas was compressed from 36.277 L to 17.876 L. What was the ΔS of the process?

@X@user.full_name@X@ @GMU: One mole of SO2 gas expanded from 24.102 L to 52.507 L. What was the ΔS of the process?

@X@user.full_name@X@ @GMU: ACS-It took 914.3 s for 48.50% of a substance to react according to first-order kinetics. What is the value of the rate constant?

@X@user.full_name@X@ @GMU: One mole of O2 gas was compressed from 33.332 L to 27.107 L. What was the ΔS of the process?

@X@user.full_name@X@ @GMU: Which of the answers below is the correct representation according to the shorthand method of the following cell?Cu2+(aq) + Sn(s) → Cu(s) + Sn2+(aq)

@X@user.full_name@X@ @GMU: The initial concentration of SbCl5 was 0.1136 M. It was allowed to decompose at some temperature until equilibrium had been attained (see reaction below). What must be the equilibrium concentration of SbCl3?SbCl5(g) → SbCl3(g) + Cl2(g) Kc = 0.0250

@X@user.full_name@X@ @GMU: One mole of CH4 gas was compressed from 45.740 L to 26.321 L. What was the ΔS of the process?

@X@user.full_name@X@ @GMU: ACS-Determine the cell potential for the reaction below if [Cu2+] = 0.2469M and [Cr3+] = 0.0189M 3Cu2+(aq) + 2Cr(s) → 3Cu(s) + 2Cr3+(aq) E°= 1.080V

@X@user.full_name@X@ @GMU: One mole of N2O4 gas was compressed from 38.813 L to 21.513 L. What was the ΔS of the process?