Multiple Choice
Aluminum has a density of 2.70 g/cm^3. What is the mass of a block of aluminum with a volume of 15.0 cm^3?
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1. Intro to General Chemistry
Density
Multiple Choice
Which of the following methods can be used to determine the density of an object?
A
Subtract the volume from the mass of the object.
B
Multiply the mass of the object by its volume.
C
Divide the mass of the object by its volume.
D
Add the mass and volume of the object together.
Verified step by step guidance1
Recall the definition of density, which is the measure of how much mass is contained in a given volume. The formula for density is given by \(\text{Density} = \frac{\text{Mass}}{\text{Volume}}\).
Understand that to find the density of an object, you need two measurable quantities: the mass of the object and the volume it occupies.
Recognize that subtracting the volume from the mass or adding mass and volume together does not provide a meaningful physical quantity related to density.
Also note that multiplying mass by volume does not give density; instead, it results in a unit that does not correspond to density.
Therefore, the correct method to determine the density of an object is to divide its mass by its volume, using the formula \(\text{Density} = \frac{\text{Mass}}{\text{Volume}}\).
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