1. A certain first-order reaction has a half-life of 75 minutes. A. Find the rate constant, including the correct units.
B. How long would it take for the reaction to reach 62% completion?

2.Using the same half-life and %-completion values from #2, find the rate constant (with the correct units) and the time needed to reach 62% completion if the reaction was second-order and had a half-life of 75 minutes.

3. A certain reaction has the following form:
aA -> bB

What would you do if you told the guy you liked that you liked him

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .

Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.