When observing your plaque count results, suppose that you count 89 plaques on the plate prepared using the phage suspension with 1000 total dilution factor. how would you calculate the concentration (pfu/ml) of the original phage suspension? (refer to the lab manual to recall the procedure you used to prepare your plaque count plates.) show your work.

pure substance: iron,copper

impure substance: water,charcoal

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.