Question

How many moles are there in 3.9 grams of potassium

Answer 1

0.0997 mol K

Step-by-step explanation:

First of all, the picture and your question do NOT match so I will solve for what you are asking for.

3.9g x 1 mol/39.10 g = 0.0997 mol K

The 39.10 grams is the atomic mass of potassium

Answer 2

1.77 so A. I don’t need to explain this just helping out haha