During the recording of her data, a student correctly lists the data for the standard curves in the appropriate columns, however, she accidentally switches the absorbance readings of her unknown so that the 405nm and the 490nm data are listed in the wrong columns. Describe how this will affect her final report for the concentration of the red dye

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.)