Calculate e∘cell for each of the following balanced redox reactions.
part a: o2(g)+2h2o(l)+4ag(s) → 4oh−(aq)+4ag+(aq)
part b: br2(l) + 2i−(aq) → 2br−(aq) + i2(s)
part c: pbo2(s)+4h+(aq)+sn(s)→pb2+(aq)+2h2o (l)+sn2+(aq)
part d: which of the reactions are spontaneous as written. check all that apply
a. pbo2(s)+4h+(aq)+sn(s)→pb2+(aq)+h2o( l)+sn2+(aq)
b. br2(l)+2i−(aq)→2br−(aq)+i2(s)
c. o2(g)+2h2o(l)+ag(s)→4oh−(aq)+4ag+(a q)

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

How many liters of ethylene glycol antifreeze (c2h6o2), with a density of 1.100 g/l, would you add to your car radiator containing 15.0 kg of water if you needed to protect your engine to - 21.5°c? for water, kf = 1.86°c m -1.