ALEXANDER HAMILTON >>>5. You bought an 18 karats ring which contains 18g of gold. What is the % by mass of gold in a ring? A. 65%
B. 75%
C. 85%
D. 95%

Simply multiply the weight of your jewelry in grams by its purity. For example, if you have an 18K ring that weighs 7 grams, knowing that 18 karats equals 75% purity, you can calculate that the pure gold in the ring is 5.25 grams.

Step-by-step explanation:

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ALEXANDER HAMILTON

Step-by-step explanation:

Alexander Hamilton

My name is Alexander Hamilton

And there's a million things I haven't done

But just you wait, just you wait

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation: