How many grams of copper are required to replace 4.00 grams of silver nitrate which are dissolved in water

0.7482 g grams of copper are required .Explanation:

Moles of silver nitrate =

According to reaction , 2 moles of silver nitrate reacts with 1 mol of copper.

Then 0.0235 mol of silver nitrate will react with:

of copper

Mass of 0.0117737 mol of copper = 0.117737 mol × 63.55 g/mol = 0.7482 g

0.7482 g grams of copper are required .

i think   the answer is c hope i'm right

the answer is d.) potassium