Question

The density for potassium is 0.856 g/cm3. What would be the mass of a 30 cm3 piece of potassium? A. 51.36g B. 25.68g C. 25.5g D. 35.05g

Answer 1

Density = mass / Volume 0.856 g/cm3 = x / 30 cm3(0.856)(30) = xx = 25.68 grams

Answer 2

Answer: The mass of given piece of potassium is 25.68 g

Step-by-step explanation:

Density of a substance is defined as the ratio of its mass and volume. The equation used to determine density follows:

`\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}`

We are given:

Density of potassium =
`0.856g/cm^3`

Volume of potassium =
`30cm^3`

Putting values in above equation, we get:

`0.856g/cm^3=\frac{\text{Mass of potassium}}{30cm^3}\\\\\text{Mass of potassium}=(0.856g/cm^3* 30cm^3)=25.68g`

Hence, the mass of given piece of potassium is 25.68 g