Pre-Lab Study Questions 1. What property of oil makes it float on water? 2. Why would heating the gas in an air balloon make the balloon rise? 3. What is the difference between density and specific gavity? 4. How does a graph help us interpret scientific data? A. Density of a Solld (Use the "density of a solld demonstration" to collect data.) A.1 Mass of the solid A 2 Volume of the solid by displacement Initial w ater level (mL) Final water level with solid (mL) Volume of solid (mL) A 3 Calculating the density of the solid Show calculations Questions and Problems (Show complete setup) Q.1 An object made of aluminum has a mass of 8.37 g. When it was placed in a graduated cylinder containing 20.0 mL of water, the water level rose to 23.1 ml. Calculate the density and specific gravity of the object B. Density of a Liquid (Use the "Sugar-Water Experiment" to collect data) B.1 Volume of Liquid Type of liquid sugar water B.2 Mass of Liquid Mass of beaker Mass of beaker + liquid Mass of liquid B.3 Density of a Liquid Density Calculations for density) C. Specific Gravity C.l Specific gravity (Show calculations, calculated from B.3) Questions and Problems (Show complete setups) 02 What is the mass of a solution that has a density of 0.,775 g/mL and a volume of 50.0 ml? 03 What is the volume of a solution that has a specifie gravity of 1.2 and a mas of 185

1. Three students have different demands for doughnuts. André's demand is given by Q = 5 - P; Carlene's demand is given by Q = 6 - 2P; Cooper's demand is given by Q = 4 -0.5P. a. Derive the market demand curve for doughnuts algebraically. b. Graph the market demand curve for doughnuts. Pay special attention to any kinks in the market demand!

<div><p>Question 5 of 10 Which option is the best example of a fiscal policy? A. A rule about voting rights B. A law requiring bike helmets C. A tax on imported software D. A regulation on car emissions</p></div><div><img src="https://media.cheggcdn.com/study/cd9/cd90e6c5-2eb4-4f00-a648-776ed6a957d1/image"></div>

Write the indicated term of the binomial expansion. 12) (3x + 4)5, 5th term A) 5120 B) 2880x2

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