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Feb 20, 2024

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CHEM 105 Tutorial Worksheet #2 SP 2024 More Math Review and Atoms 1. If a train in traveling at 45 mph, how fast is the train traveling in km per second? 2. A foundational equation we will use later in the semester is the ideal gas law, PV=nRT. Solve this equation for each variable. (Ex: P=?, V=?, n=?, R=?, T=?). 3. From the ideal gas law, one can write the following relationship. Solve this equation for T 2 . 𝑃 1 𝑇 1 = 𝑃 2 𝑇 2 4. Calculate the density of a block with a volume of 46.7 mL and a mass of 1.824 g. Report this density in the unit g/cm 3 . 5. A metal slug has a density of 9.81 g/cm 3 . What is the volume of this slug when it has a mass of 12.3g. Report your answer in mL. 6. Classify the following as a hetero- or homogeneous mixture. a. Chicken noodle soup b. Coffee with cream c. Ocean water d. Vinaigrette
CHEM 105 Tutorial Worksheet #2 SP 2024 7. Consider each set of the following experimental data and identify which of the proportion laws (definite or multiple) it represents. a. Sample 1 is found to contain 24.02 g of C and 6.048 g of H. Sample 2 is found to contain 24.020 g of C and 12.096 g of H. b. Sample 1 is found to contain 2.016 g of H and 16.000 g of O. Sample 2 is found to contain 4.032 g of H and 64.000 g of O. 8. Summarize the findings of the following: a. Dalton’s Atomic Theory b. Thompson’s Cathode Ray Experiment c. Millikan’s Oil Drop Experiment d. Rutherford’s Nuclear Theory
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