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Ch 1 Measurement

# Ch 1 Measurement - Chem 101 Dr Nielson Practice Problems...

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Chem 101 Dr. Nielson Practice Problems for Chapter 1 1. The density of Mg is 1.74g/cm 3 . What is the volume of 32 g of this metal? 2. An unknown liquid is thought to be benzene. A 25.0 ml portion of the liquid has a mass of 21.95g. A chemistry handbook lists the density of benzene as 0.878g/ml. Is this substance benzene? 3. If the temperature outside is 88 degrees F, what is the temperature in degrees K? 4. Which of the following are exact numbers? (Circle the ones that are) a. The mass of a paperclip b. The number of pages in your chemistry book c. The temperature on the surface of the sun d. The average height of students in the Chemistry 101 class e. The number of ml in a cubic meter of water 5. How much energy is released when 12g of Aluminum is raised from 35 C to 38C? (The specific heat capacity of Al is 0.89 J/C x g) 6. How much energy will it take to heat 576 g of liquid water to 89 degrees Celsius if the temperature of the water right now is 65 degrees Celsius?

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