A chromatogram has three bands

with Rf values of 0.25, 0.47 and 0.82.

Which value corresponds to the

material with the highest molecular

weight?

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

Acontrol during an experiment. might change remains constant does not exist does change

How many moles of bromine are needed to produce 3.23 moles of potassium bromide