how could you find the mass and volume from this info
Acetone (fingernail-polish remover) has a density of 0.7857 g/cm3.
oh i read the problem wrong. i guess i have to include this part
What is the mass in grams of 28.11 mL of acetone?
right. You can't have two unknowns without two equations.
mass = volume x density.
You have the volume and the density; you can calculate the mass.
To find the mass and volume of acetone given its density, you can use the formula:
Density = Mass / Volume
Given that the density of acetone is 0.7857 g/cm3, we can rearrange the formula to solve for either mass or volume.
To find the mass:
Mass = Density x Volume
To find the volume:
Volume = Mass / Density
Now, we need to be given either the mass or the volume in order to calculate the other. If you have the volume, multiply it by the density to find the mass. If you have the mass, divide it by the density to find the volume.
For example, let's say you are given the volume of acetone as 100 cm3. To find the mass, you would multiply the volume by the density:
Mass = 0.7857 g/cm3 x 100 cm3 = 78.57 g
Alternatively, if you are given the mass of acetone as 50 g, you would divide the mass by the density to find the volume:
Volume = 50 g / 0.7857 g/cm3 = 63.7 cm3
So, depending on what information you have (mass or volume), you can use the density value to calculate the missing value.