How has light been described?
a. as neither a wave nor a particle
b. only a wave
c. only a particle
d. both wave & particle

what is amplitude?
a. distance between two crest or two troughs
b. number of complete waves that pass a point in a second
c. time it takes for one complete wave to pass a given point
d. height of a wave

in advance!

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)