Ten karat gold is 41.7% gold. How many grams of pure gold are there in a ring made of 70.0 g of ten karat gold?
To find out how many grams of pure gold is there in 70.0 g ring made of ten karat gold we simply have to find out how much is 41.7% of 70.0 g .
41.7%(70.0 g)=0.417⋅70.0 g=29.19 g
So, ring contains 29.19 grams of pure gold.