The mass of a length of metal wire is 45 g. When the wire is placed in a graduated

cylinder with water, it displaces 5 mL of water. What is the density of the metal?

A. 0.1 g/cm3

B. 9 g/cm3

C. 40 g/cm3

D. 225 g/cm3

The answer to your question is 9 g/ml or 9 g/cm³

Explanation:

Data

mass = 45 g

volume = 5 ml

density = ?

Process

1. - Consider that the volume displaced is equal to the volume of the wire.

2. - Write the formula to calculate the density

density = mass/volume

3. - Substitution

density = 45/5

consider milliliters and cubic centimeters are the same.

4. - Result

density = 9 g/ml or 9 g/cm³

5 ml=5 cm³, density=mass/volume=45/5 = 9 g/cm³ therefore answer B