Answer:
85.12 grams
Step-by-step explanation:
We can write (4.48 g/coin) with the given information. To find the mass of 19 coins, multiply the two numbers so that the unit "coins" cancels:
(19 coins)*(4.48 g/coin) = (19*(4.48))g [Coins cancels, leaving just grams].
(19*(4.48))g = 85.12 grams