Question

10) Calculate the volume (in mL) of 4.77x10^10 ng of manganese. The density of manganese is 7.20 g/cm3. ____ mL

Answer 1

Answer

6.625 mL

Explanation

Given:

Mass of manganese = 4.77 x 10¹⁰ ng

Density of manganese = 7.20 g/cm³

Volume of manganese = ?

The mass of the manganese given is in nanogram, ng and you need to be convert it to gram, g.

Conversion of ng to g

1 ng = 1.0 x10⁻⁹ g

∴ 4.77 x 10¹⁰ ng = 47.7 g

Hence, you can now calculate the volume of the manganese in mL using the formula below:

$\text{Volume }=\frac{Mass}{Density}$

Volume of manganese = (47.7 g)/(7.2 gcm⁻³) = 6.625 mL