Question

What is the mass of 5.5g atom of K?
grade9(mole concept)

Answer 1

Answer:

23g

Explanation:

1 mol of K = 39 grams (39 is the atomic weight of potassium)

6,023 x 10E23 atoms of K = 39 grams

1 atom of K = 39 grams / (6,023 x 10E23)

11 atoms of K = 429 / (6,023 x 10E23) = 71,227 x 10E-23 grams