Chapter 1, Problem 1.82E

In all European countries, gasoline is sold by the liter. If you wanted 20.0 gallons of gas, how many liters would you purchase? (1.00 L = 1.06 quarts; 1 gal = 4 quarts)

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A chemistry student needs 70.0 g of tetrahydrofuran for an experiment. By consulting the CRC Handbook of Chemistry and - 3 Calculate the volume of tetrahydrofuran the Physics, the student discovers that the density of tetrahydrofuran is 0.889 g•cm student should pour out. Be sure your answer has the correct number of significant digits. mL x10

1. A 25 mL flask is known to hold a total volume of 27.64 mL when completely filled. The empty flask has a mass of 45.897 grams. The student was to determine the density of an irregularly shaped solid. He added the solid to the flask and determined that the mass of the flask and the solid was 156.11 grams. He then filled the remaining volume of the flask with water and determined that the mass of the flask, water and solid was 171.89 grams. The density of the water was 0.9970 g/mL. Using this information answer the following questions: a) What was the mass of the solid? b) What was the mass of the water? c) What was the volume of water? d) What was the volume of the solid? e) What was the density of the solid?

A certain city covers an area of 66.4 mi2. How many square kilometers is this? Use the conversion factor 1 mile = 1.61 km. Report your answer to the appropriate number of significant figures.

The solubility of potassium chromate is 66.9 g per 100 g of water. In an experiment, a student had 802 mL of water available. What mass of potassium chromate, in grams, could be dissolved in that water? Do not include units in your answer.

A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. 19. mol kg = ? mol g x10 ロ･ロ X 3 00 4

1.  A 22.65-g sample of a solid is placed in a flask. Ethanol is added to the same flask having the total volume together of 45.00 mL. The solid and ethanol together weigh 38.58 g. At room temperature, the density of ethanol is 0.789 g/mL. What is the density of the solid?  Report your answer in correct significant figures with proper units.

A bar of gold with a mass of 2060.5 g has the following dimensions: 7.30 cm by 3.25 cm by 4.50 cm. Use this information to calculate the density of gold in g/mL. (Note: 1 cm3 = 1 mL) ans: 19.299g/ml To determine the density of sand, you put a graduated cylinder on an electronic scale and zero it. Then, you pour 7.50 mL of sand into the graduated cylinder. The scale reads 9.800 g. What is the density of the sand? 1.307g/ml  Assume the volume of the statue in the movie is 1.000 L. Use the density of gold to calculate the mass (in kg) of the statue. 19.299kg   In the movie Raiders of the Lost Ark (1981), Indiana Jones replaces the golden statue with a bag of sand. Dr. Jones had to do some quick mental calculations to avoid springing a trap. As you complete this activity (using dimensional analysis and showing all work) you will decide if what you saw paralleled reality. Watch the scene on YouTube, at https://www.youtube.com/watch?v=0gU35Tgtlmg   1. Convert the mass of the statue into…