Question

Silver has a density of 0.04 lb/cm^3. A standard silver bar has a volume of 642

cm^3. To the nearest pound, how much does 1 standard silver bar weigh?

Answer 1

The weight of the mentioned silver bar is:

• 25.68 Lb

Explanation:

Remember that the formula of density is:

• Density = mass / volume.

From this formula, you can clear the mass (because this is the valor you need to solve the exercise), so you will have:

• Mass = density * volume

With this last formula, you must replace the values given in the exercise:

• Mass = density * volume
• Mass = 0.04 lb/cm^3 * 642 cm^3
• Mass = 25.68 Lb

You can check this value using the original formula of density and see if the density has the same valor of the exercise:

• Density = mass / volume.
• Density = 25.68 Lb / 642 cm^3
• Density = 0.04 Lb / cm^3