The density for potassium is 0.856 g/cm3. What would be the mass of a 30 cm3 piece of potassium?

Question

I dont know how to calculate the mass of 30cm3 piece of potassium

 

Answer 1

Density = mass / Volume

 

0.856 g/cm3 = x / 30 cm3

(0.856)(30) = x

x = 25.68 grams

Answer 2

0.856 g / cm³ x 30 cm³ = 25.68g

 

To calculate the mass, you multiply the density of potassium by the size of the piece.

Answer 3

Mass of a piece of potassium = 0.026 kg