When a solution of dithionite ions (s2o42–) is added to a solution of chromate ions (cro42–), the products of the ensuing chemical reaction, which occurs under basic conditions, include soluble sulfite ions and solid chromic hydroxide. this reaction is used to remove cr(vi) from wastewater generated by factories that make chrome-plated metals?

the answer is 3.1 his answer is wrong mines is right

the higher the current the higher the mag field around it the higher the influence on the compass

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y