Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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It is known that the density of mercury is 13.54 times the density of water. What volume of this mercury in liters would weigh the same as 0.020m^3 of fuel oil, when the fuel oil weighs 9.42kN for every cubic meter?
a. 71
b. 1.42
c. 1.7
d. 2.4
7. I used to run at a pace of 8.3 mi/hr. Convert that speed to kilometers per minute.
a. How many minutes did it take me to run one kilometer?
b. What is my pace in minutes per mile?
(HINT: You are starting over in this problem, get numbers from the original question)
8. My dog Bucky used to eat 2.5 cups of food per day. Each cup of dog food weighs about 0.261 lbs. If a 40 lb bag of
food costs $38, how much money will it cost to feed him for his life span of about 14 years?
Which substance can be separated by filtration?
A. Compound
B. Element
C. Mixture
D. Solution
Which is an example of physical property of matter? *
A. Baking a cake
B. Cooking of gelatin
C. Melting of ice
D. Rusting of metal
Which is an example of chemical property of matter?
A. Digestion of food
B. Evaporation of water
C. Sublimation of moth balls
D. Condensation of water vapor
Which is a physical property of matter?
A. Combustibility
B. Corrosiveness
C. Density
D. Reactivity
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- The average daytime temperatures on the earth and Jupiter are 72F and 313 K, respectively. Calculate the difference in temperature, in C, between these two planets.arrow_forwardA hot metal block is plunged into water in a well-insulated container. The temperature of the metal block goes down, and the temperature of the water goes up until their temperatures are the same. A total of 1500 J of energy' is lost by the metal object. By how much did the energy of the water increase? What law of science is illustrated by this problem?arrow_forwardThe lowest temperature recorded in a particular city during the past year was-16.22 C. What was the temperature on the Kelvin scale? K The highest temperature recorded in the same city during the past year was 303.84 K. What was the temperature in degrees Celsius? C.arrow_forward
- Write the following data in scientific notation.a. The diameter of the Sun is 1,392,000 km.b. The density of the Sun’s lower atmosphere is 0.000000028 g/c m 3.arrow_forward1. A hot tub is filled with 570 gal of water a. What is the volume of water, in liters, in the tub? b. What is the mass, in kilograms, of water in the tub? c. How many kilocalories are needed to heat the water from 62 °F to 105 °F? d. If the hot-tub heater provides 5900 kJ/min, how long, in minutes, will it take to heat the water in the hot tub from 62 °F to 105 °F?arrow_forward1. A chef heated a bowl of soup of 30 °C to 50°C. what is the change in temperature in the Fahrenheit scale?arrow_forward
- 3. A jogger runs at an average speed of 5.9 mi/h. a. How fast is she running in m/s? b. How many kilometers does she run in 98 min? c. If she starts a run at 11:15 am, what time is it after she covers 4.75 x 104 ft?arrow_forwardComplete the table.a. 1245 kg 1.245 * 106 g 1.245 * 109 mgb. 515 km _____dm _____cmc. 122.355 s _____ms _____ksd. 3.345 kJ _____J _____mJarrow_forward8.-Classify each statement as a law, a theory, an experiment, a hypothesis, an observation Birds evolved from dinosaurs. 1. 2. Hot air is less dense than cold air, probably because the components of hot air are moving more rapidly 3. The ingredients of Ivory soap were analyzed to see whether it really is 99.44 % pure , as advertisedarrow_forward
- Home work and Exercises 1.53 and 1.56 53. Convert the following Fahrenheit temperatures to the Celsius and Kelvin scales. a. -459°F, an extremely low temperature b. -40.°F, the answer to a trivia question c. 68 F, room temperature d. 7 x 10 F. temperature required to initiate fusion reactions in the sunarrow_forwardState whether the following properties of matter are physical or chemical. a. An iron nail is attracted to a magnet. b. A piece of paper spontaneously ignites when its temperature reaches 51 c. A bronze statue develops a green coating (patina) over time. d. A block of wood floats on water. A piece of sliced apple turns brown. f. A slab of marble feels cool to the touch. g. A sapphire is blue.arrow_forward5. Seawater can be made into drinking water by boiling the seawater, collecting the steam, and con- densing the steam to liquid water. Classify the changes in water that occur when it is boiled to steam, then condensed to liquid water. a. Both are physical. b. One is physical, and one is chemical. с. Both are chemical. d. Can't be determined from the information given. Explain your answer: I think that it is physical folr both since it Der gets hoiled, it only goes woter lalben thearrow_forward
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