Chapter 1, Problem 1.82E

The average person's step covers 2.5 feet. Some health experts recommend getting 10,000 steps a day. If you have an average stride (step length), how many miles would you walk if you walked 10,000 steps a day? (5280 ft = 1 mi). 1.3 x 10^8 miles 1.3 miles 4.7 miles 5.0 miles

One carat is equivalent to a mass of 0.200 g. Use the fact that 1 kg (1000 g) has a weight of 2.205 lb under certain conditions, and determine the weight of a 1414 carat diamond in pounds (lb).

Aqueous hydrochloric acid (HC1) will react with solid sodium hydroxide (NaOH) to produce aqueous sodium chloride (NaCl) and liquid water (H,0). Suppose 31.7 g of hydrochloric acid is mixed with 55. g of sodium hydroxide. Calculate the minimum mass of hydrochloric acid that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits.

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

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)

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?

Red gold is a gold-copper alloy used to make jewelry. A piece of jewelry made of red gold weighs 7.05 g and has a volume of 0.504 cm. Gold has a density of 19.3 g/cm' and copper has a density of 8.96 g/cm³. Calculate the percentage by mass of each metal in the jewelry. Assume the total volume of the jewelry is the sum of the volumes of the two metals it contains. gold: copper: Pure gold is defined as having 24 carats. When mixed in an alloy, the carats of gold are given as a percentage of this value. For example, a piece of jewelry made with 50% gold has 12 carats. State the purity of this piece of red gold jewelry in carats. purity: carats 10:08 AM 9/3/2021 64°F Clear ENG

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.

1. Suppose some measurements are made on two different homogeneous stones to find out if they are made of the same kind of rock. The mass and volume measurements are listed below. Are the two stones the same type of rock? Why or why not? Show all calculations. Mass Volume 58.0 grams 50.1 grams 20.0 cm3 15.0 cm3 Stone 1 Stone 2