One milligram of a compound of molecular weight 160 is dissolved in 10 ml of ethanol, and the solution is poured into a 1-cm uv cell. the uv spectrum is taken, and there is an absorption at = 247 nm. the maximum absorbance at 247 nm is 0.50. calculate the value of for this absorption.

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

How many mmols of tris-hcl are there in 100 ml of a 100 mm tris-hcl buffer solution at ph 8.1? note that the 100 mm refers to the sum of tris and tris-hcl concentrations?

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.