Question

An engineer has the task of producing an aluminum alloy with a density of 3.0 grams per cubic centimeter. She comes up with the perfect alloy and saves a sample of it. Which mass and volume measurements correspond to this sample?

7 g and 2.3 cm³
10 g and 7 cm³
15 g and 5 cm³
21 g and 8 cm³

Answer 1

The best option is for the following option m = 15 [g] and V = 5 [cm³]

Step-by-step explanation:

We have that the density of a body is defined as the ratio of mass to volume.

`Ro =m/V`

where:

Ro = density = 3 [g/cm³]

Now we must determine the densities with each of the given values.

For m = 7 [g] and V = 2.3 [cm³]

`Ro=7/2.3\\Ro=3.04 [g/cm^(3) ]`

For m = 10 [g] and V = 7 [cm³]

`Ro=10/7\\Ro=1.42[g/cm^(3) ]\\`

For m = 15 [g] and V = 5 [cm³]

`Ro=15/5\\Ro=3[g/cm^(3) ]\\`

For m = 21 [g] and V = 8 [cm³]

`Ro=21/8\\Ro=2.625[g/cm^(3) ]\\`