A student measures the mass of a metal bar as 57.21 g. the student fills a graduated cylinder with water and determines the volume of water to be 53.70 mL. The student places the metal bar into the graduated cylinder and records the new volume as 58.80 mL. Calculate the density of the metal bar.
Chemistry · Middle School · Mon Jan 18 2021
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Answer: To calculate the density of the metal bar, we need to use the formula:
Density = Mass / Volume
First, we need to find the volume of the metal bar. We can do this by taking the difference between the new volume of water with the metal bar submerged and the initial volume of water:
Volume of metal bar = Final volume - Initial volume = 58.80 mL - 53.70 mL = 5.10 mL
Next, we know the mass of the metal bar from the measurement:
Mass of metal bar = 57.21 g
Now we can calculate the density:
Density of metal bar = Mass / Volume = 57.21 g / 5.10 mL ≈ 11.22 g/mL
Therefore, the density of the metal bar is approximately 11.22 g/mL.