How many grams are in 74.0 mg?
1 Answer
Aug 28, 2016
"m" is the prefix "milli", which means10^(-3) , a number less than1 ."1 mg" is therefore literally smaller than"1 g" .
So, there are
Due to the equivalences given above, we can use one of them as a conversion factor.
74.0 cancel("mg") xx "1 g"/(10^3 cancel("mg"))
= 74.0 cancel("mg") xx (10^(-3) "g")/(1 cancel("mg"))
= color(blue)("0.074 g")
You don't have to do it both ways, but both are provided so you can choose.