Determine its volume by how much water it displaces,
then divide mass by volume
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Mass is measured by density multiplied by volume. In order to figure out a mass of a rock, one must know its density and its volume measurements.
Density = Mass / Volume Rearranging this gives: Volume = Mass / Density Mass = Density × Volume
You have to know two out of three ... mass, volume, density ... then you can find the missing one. If density is missing . . . Density = (mass)/(volume) If mass is missing . . . Mass = (density) x (volume) If volume is missing . . . Volume = (mass)/(density)
You need the mass and volume to calculate the density
Well, sweetheart, to find the volume of that rock, you divide the mass by the density. So, 600 g divided by 3.00 g/cm3 gives you a volume of 200 cm3. Voila, you've got your answer!