A pycnometer is a device used to find the volume of an object based on mass and

Question

A pycnometer is a device used to find the volume of an object based on mass and water displacement. Use the following information to find the volume of a brass cylinder that has a mass of 33.9633 g. A pycnometer completely filled with water (0.997044 g/cm3) has a mass of 94.43 g. When the brass cylinder is placed inside the pycnometer full of water, it displaces a volume of water equal to the volume of the cylinder. The total mass of the pycnometer, cylinder, and remaining water is 124.19 g. O 4.191 cm3 O 29.85 cm3 O 4.215 cm3 O 4.203 cm3 O 29.67 cm3

Explanation / Answer

Total mass of pycnometer,cylinder and remaining water = 124.19 g

mass of brass cylinder = 33.9633 g

mass of pycnometer + full of water = (94.43+33.9633) g

mass of water displaced = (94.43 + 33.9633)-(124.19) = 4.2033 g

volume of brass cylinder = mass/density = 4.2033 / 0.997044 = 4.215 cm^3

answer: 4.215 cm^3

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