During a quirky promotion by a discount sporting goods store, golf balls were given away free when purchasing Ping-Pong balls in bulk. An equal mass of golf balls was given away based on the mass of ping ? pong balls purchased by a customer. The mass of a ping ?pong ball is 2 grams and a golf ball is 40 grams.
If 1 mole of ping ? pong balls were purchased, how many free golf balls would a customer receive? Show calculations to support your answer