How many moles of cu are needed to react with 3.50 moles of agno3

We need 1.75 moles Cu

Explanation:

Step 1: Data given

Moles of AgNO3 = 3.50 moles

Step 2: The balanced equation

2AgNO3 + Cu → 2Ag + Cu (NO3) 2

Step 3: Calculate moles Cu

For 2 moles AgNO3 we need 1 mol cu to produce 2 moles Ag and 1 mol Cu (NO3) 2

For 3.50 moles AgNO3 we need 3.50 / 2 = 1.75 moles Cu

There will be formed 3.5 moles Ag and 1.75 moles Cu (NO3) 2

We need 1.75 moles Cu