Find its density.
Express your answer to two significant figures and include the appropriate units
How does this compare with the density of water?
Express your answer using two significant figures.
To find the density of a substance, you need to know its mass and its volume.
1. Determine the mass of the substance: This can be done by measuring the weight of the object using a balance. The mass is typically measured in grams (g) or kilograms (kg).
2. Determine the volume of the substance: The volume can be measured in different ways depending on the shape of the object. For regular-shaped objects, you can use a ruler or a measuring instrument to measure the length, width, and height, and then calculate the volume. For irregular-shaped objects, you can use a technique called displacement, where you measure the volume of water the object displaces when submerged in a graduated cylinder.
Once you have the mass and volume of the substance, you can calculate its density using the formula:
Density = Mass / Volume
Now, let's assume you have the mass and volume of the substance and want to calculate its density and compare it with the density of water.
For example, let's say the mass of the substance is 50 grams (g) and the volume is 25 cubic centimeters (cm³):
Density = Mass / Volume
Density = 50 g / 25 cm³
Calculating the density gives us:
Density = 2 g/cm³
To express this answer to two significant figures, we need to round it according to the rules of significant figures.
The density of the substance is 2 g/cm³ (rounded to two significant figures) and the appropriate units are grams per cubic centimeter (g/cm³).
To compare this with the density of water, we need to know the density of water. The density of water is approximately 1 g/cm³ or 1 kilogram per liter (kg/L).
Comparing the two densities, we can see that the substance is denser than water, as its density is 2 g/cm³ compared to water's density of 1 g/cm³.