Suppose density of 100.0 mL of some liquid was found to be 0.789 g/mL. What would be the specific gravity of 20.0 mL of this liquid?
As compared to water, the specific gravity is .789
To find the specific gravity of a liquid, we need to compare its density to the density of water. The specific gravity is defined as the ratio of the density of the liquid to the density of water at the same temperature.
First, let's calculate the mass of the 100.0 mL of the liquid using its density. We can use the formula:
mass = volume × density
Given that the volume is 100.0 mL and the density is 0.789 g/mL, we can calculate the mass as follows:
mass = 100.0 mL × 0.789 g/mL = 78.9 g
Next, let's calculate the density of water. The density of water at 4 degrees Celsius is approximately 1.0 g/mL.
Now, we can calculate the specific gravity using the formula:
specific gravity = density of the liquid / density of water
Given that the density of the liquid is 0.789 g/mL and the density of water is 1.0 g/mL, we can calculate the specific gravity as follows:
specific gravity = 0.789 g/mL / 1.0 g/mL = 0.789
Therefore, the specific gravity of 20.0 mL of this liquid would also be 0.789.