You are asked to find the mass in grams but you are given moles .
We know that silver, AgAg, has a molar mass of 107.87 g/(mol)107.87gmol. This means, for every 1" mole"1 mole of AgAg you have, there are 107.87 "grams"107.87grams of it. We will use this as our tool to convert "moles"->"grams"moles→grams.
We will establish an approximation for the molar mass of AgAg
color(white)(aaaaaaaaaaaaaaa)aaaaaaaaaaaaaaa107.87 approx 108107.87≈108
color(white)(aaaaaaaaaaaaaaa)aaaaaaaaaaaaaaa
Method
(3.67 cancel"moles")/(1) * (108 g)/(1 cancel"mole")=396.36" grams of Ag"
Answer: 396.36" grams of Ag"