Question

A student measures the mass and volume of a small cube made of an unknown metal. The mass of the cube is 25.0 g, and the volume of the cube is 3.19 cm³. The student is told that the cube is a sample of one of the four materials listed in the table. based on the Data given, the unknown material is most likely A gold Density 19.39, B iron Density 7.85, C silver Density 10.50 D tin density 7.28

Answer 1

The unknown material with a mass of 25.0g, and the volume is 3.19 cm³ is iron with a density of 7.85g/cm³.

DENSITY:

• The density of a substance can be calculated by dividing the mass of the substance by its volume. That is;

• Density (g/cm³) = mass (g) ÷ volume (cm³)

• According to this question, the mass of the cube is 25.0g, and the volume of the cube is 3.19cm³. The density can be calculated as follows:

• Density = 25.0g ÷ 3.19g/cm³

• Density = 7.84g/cm³

• Therefore, the unknown material with a mass of 25.0g, and the volume is 3.19 cm³ is iron with a density of 7.85g/cm³.

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