How many moles of potassium are in 156.4 g of potassium?

Answer 1

Molecular weight of potassium (K): 39.1 g/mole...Just divide 156 by the molecular weight to get moles:

156/39.1 = 3.99 moles K

Answer 2

Atomic Mass of potassium, K = 39.1

Amount of K in 2.0g sample = 2.0/39.1 = 0.0512mol

Answer 3

Divide mass by atomic mass:

0.98 (g K) / 39.1 (g/mol K) = 0.020 mol K

Answer 4

Atomic mass of potassium, K = 39.1

Amount of potassium is 156.4g sample = 156.4/39.1 = 4.00mol

There are 4 moles of potassium in 156.4 grams of potassium.

Answer 5

The atomic mass of potassium, K is 39.1.

Amount of potassium = mass of sample / atomic mass= 2.25/39.1 = 0.0575mol

Answer 6

In 48 g of potassium are 1,228 moles.

Answer 7

Atomic mass of potassium = 39.10 g/mole156.4 g x 1 mole/39.10 g = 4.000 moles (to 4 significant figures)