Why are the elements in groups 3 to 12 often used to make dyes?

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

In the reaction h2co3 (aq) + 3nh3 (aq) = 2 nh4+ (aq) + co3 2-, how many electrons are transferred?