Here's how to calculate the grams in 3 moles of ammonium chloride (NH₄Cl):

1. Find the molar mass of ammonium chloride:

* N (nitrogen) = 14.01 g/mol

* H (hydrogen) = 1.01 g/mol * 4 = 4.04 g/mol

* Cl (chlorine) = 35.45 g/mol

* Total molar mass = 14.01 + 4.04 + 35.45 = 53.49 g/mol

2. Multiply the molar mass by the number of moles:

* 53.49 g/mol * 3 mol = 160.47 g

Therefore, there are approximately 160.47 grams in 3 moles of ammonium chloride.