How do you express a mass of 0.014 mg in grams?

##0.014## ##mg## = ##0.000014## ##g## (scientific notation: ##1.4## ##"x"## ##10^-5## ##g##)

A milligram is ##1/1000## of a gram.

So to convert a milligram to gram you divide it by ##1000##. (or just move the decimal place over 3 spaces to the left )