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D, m, & V Practice Problems

This document presents a set of density calculation problems along with their solutions. It details how to determine the density (D) of various substances using relevant formulas and methods. Each problem is laid out with its calculations, highlighting conversions and the interpretation of results. Comprehensive answers are provided for all problems, explaining the significance of density values in identifying material states, whether solid, liquid, or gas. Ideal for students and educators in physics and chemistry.

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D, m, & V Practice Problems

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  1. D, m, & V Practice Problems Pg. 56, #1-9

  2. Answers 1. D = 16.52 g ÷ 2.26 cm3 D = 7.31 g/cm3 2. D = 163 g ÷ 50.0 cm3 D = 3.26 g/cm3 3. D = 0.36 g ÷ 2500 cm3 D = 1.4 x 10-4 g/cm3 Because the density is so low, the substance is a gas.

  3. Answers 4. D = 75.5 g ÷ 6.7 cm3 D = 11 g/cm3 The element is lead. 5. D = 83.75 g ÷ 125 cm3 D = 0.670 g/cm3 6. m = 8 g/cm3 x 64 cm3 m = 500 g

  4. Answers 7. m = 0.5 g/cm3 x 800 cm3 m = 400 g 8. V = 325 g ÷ 9 g/cm3 V = 36 cm3 9. V = 0.10 g ÷ 3.5 g/cm3 V = 0.029 cm3

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