Concentration of the reactant
A certain first-order reaction () has a rate constant of 6.60×10-3 at 45 . How many minutes does it take for the concentration of the reactant, , to drop to 6.25 of the original concentration?
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The following ions contain the same number of electrons. Rank them in order of decreasing ionic radii. Rank from largest to smallest radius. To rank items as equivalent, overlap them. NA+ F- 02- Al3+ Mg2+ N3-
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Small spheres of equal mass are made of lead (density =11.3 {rm g}/{rm cm}^{3}), silver (10.5 {rm g}/{rm cm}^{3}), and aluminum (2.70 {rm g}/{rm cm}^{3}). Without doing a calculation, list the spheres in order from the largest to the smallest.
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To what general class of mechanisms does the attack of bromide ion, Br-, on the cyclic bromonium ion(bridged bromonium intermediate of E-stilbene) belong? Does this ring-opening step follow first or second-order kinetics?
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