О U Y T R E L К J G F D ? / В V С X NameAdaopn Echezoro Problems: Experiment 2 Density You must show calculations in the space provided and place the answer on the line to receive credit. 11.3 g/cm3 2.70 g/cm2 Lead 19.3 g/cm3 8.93 g/cm3 Densities Gold Aluminum Сopper 1. A 1145 g block of wood has the measurements of 11.2 cm x 12.1 cm x 13.6 cm. Calculate the density of the wood. lem O621 18H3 2. A 108.948 g metal sample is placed in a 50-mL graduated cylinder containing 22.6 mL of water and the water level rises to 34.8 mL. Calculate the density the metal sample and identify the metal from the above list of metals. 0 Density Metal 3. Calculate the mass in grams ofa 525 cm3 block of lead. A . NA I

О U Y T R E L К J G F D ? / В V С X NameAdaopn Echezoro Problems: Experiment 2 Density You must show calculations in the space provided and place the answer on the line to receive credit. 11.3 g/cm3 2.70 g/cm2 Lead 19.3 g/cm3 8.93 g/cm3 Densities Gold Aluminum Сopper 1. A 1145 g block of wood has the measurements of 11.2 cm x 12.1 cm x 13.6 cm. Calculate the density of the wood. lem O621 18H3 2. A 108.948 g metal sample is placed in a 50-mL graduated cylinder containing 22.6 mL of water and the water level rises to 34.8 mL. Calculate the density the metal sample and identify the metal from the above list of metals. 0 Density Metal 3. Calculate the mass in grams ofa 525 cm3 block of lead. A . NA I

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter1: Matter And Measurements

Section: Chapter Questions

Problem 38QAP: A gasoline station in Manila, Philippines, charges 38.46 pesos per liter of unleaded gasoline at a...

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A gasoline station in Manila, Philippines, charges 38.46 pesos per liter of unleaded gasoline at a time when one US. dollar (USD) buys 47.15 pesos (PHP). The car you are driving has a gas tank with a capacity of 14 U.S. gallons and gets 24 miles per gallon. (a) What is the cost of unleaded gasoline in Manila in USD per gallon? (b) How much would a tankful of unleaded gasoline for your car cost in USD? (c) Suppose that you have only PHP 1255 (a day's wage for an elementary school teacher) and the car's tank is almost empty. How many miles can you expect to drive if you spend all your money on gasoline?
For the pin shown in Fig. 2.5, why is the third figure determined for the length of the pin uncertain? Considering that the third figure is uncertain, explain why the length of the pin is indicated as 2.85 cm rather than, for example, 2.83 or 2.87 cm.
Is the density of a gaseous substance larger or smaller than the density of a liquid or a solid at the same temperature? Why?
A measurements true value is 17.3 g. For each set of measurements, characterize the set as accurate, precise, both, or neither. (a) 17.2, 17.2, 17.3, 17.3 g (b) 16.9, 17.3, 17.5, 17.9 g (c) 16.9, 17.2, 17.9, 18.8 g (d) 17.8, 17.8, 17.9, 18.0 g
1.53 Carry out the following unit conversions. (a) 3.47106g to g , (b) 2.73104L to mL, (c) 725 ns to s, (d) 1.3 m to km.
A 37.2-g sample of lead (Pb) pellets at 20°C is mixedwith a 62.7-g sample of lead pellets at the sametemperature. What are the final mass, temperature, anddensity of the combined sample? The density of Pb at20°C is 11.35 g/cm3
A 40-lb container of peat moss measures 14 * 20 * 30 in. A40-lb container of topsoil has a volume of 1.9 gal. (a) Calculatethe average densities of peat moss and topsoil in units ofg>cm3. Would it be correct to say that peat moss is “lighter”than topsoil? (b) How many bags of peat moss are needed tocover an area measuring 15.0 ft * 20.0 ft to a depth of 3.0 in.?
Water has a density of 0.997 g>cm3 at 25 °C; ice has a densityof 0.917 g>cm3 at -10 °C. (a) If a soft-drink bottle whose volumeis 1.50 L is completely filled with water and then frozento -10 °C, what volume does the ice occupy? (b) Can the icebe contained within the bottle?
Copper can be drawn into thin wires. How many meters of 34-gauge wire (diameter 6.304X10³in) can be producedfrom the copper in 5.01 lb of covellite, an ore of copper that is 66% copper by mass?
(a) A sample of tetrachloroethylene, a liquid used in dry cleaningthat is being phased out because of its potential to cause cancer,has a mass of 40.55 g and a volume of 25.0 mL at 25 °C. Whatis its density at this temperature? Will tetrachloroethylene floaton water? (Materials that are less dense than water will float.)(b) Carbon dioxide (CO2) is a gas at room temperature andpressure. However, carbon dioxide can be put under pressure tobecome a “supercritical fluid” that is a much safer dry-cleaningagent than tetrachloroethylene. At a certain pressure, the densityof supercritical CO2 is 0.469 g/cm3. What is the mass of a25.0-mL sample of supercritical CO2 at this pressure?
One gallon of gasoline burned in an automobile’s engine produces on the average 9.5 kg of carbon dioxide, which is a greenhouse gas, that is, it promotesthe warming of Earth’s atmosphere. Calculate theannual production of carbon dioxide in kilograms ifthere are 40 million cars in the United States, andeach car covers a distance of 5000 mi at a consumption rate of 20 mi per gallon.
To identify a liquid substance, a student determined itsdensity. Using a graduated cylinder, she measured out a 45-mLsample of the substance. She then measured the mass of thesample, finding that it weighed 38.5 g. She knew that the substancehad to be either isopropyl alcohol 1density 0.785 g>mL2or toluene 1density 0.866 g>mL2. What are the calculated densityand the probable identity of the substance?