Introductory Chemistry For Today
8th Edition
ISBN: 9781285644561
Author: Seager
Publisher: Cengage
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QUESTION 14
Match the symbol with the correct definition.
A. a measure of the amount of substance
v g
B. a measure of distance
v mol
C. a measure of mass
D. a measure of time
E. a measure of temperature
v K
F. a measure of volume
QUESTION 15
The weather says that the forecast for tomorrow is 73°F and sunny. What is this temperature in Kelvin?
a.
314.1 K
b.
295.9 K
c.
346.1 K
d.
287.2 K
1.61 km = 1 mi
The speed of light is 3.0 x 108 m/s. What is the speed of light
in mph and how many orders of magnitude faster is light
traveling than a car driving 50 mph?
A. 1.12x107 mph, order of magnitude: 6
B. 1.12x10¹0 mph, order of magnitude: 9
C. 6.71 x 10¹¹ mph, order of magnitude: 10
D. 6.71 x 108 mph, order of magnitude: 7
E. 6.71x105 mph, order of magnitude: 4
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- 6.) The American Heart Association recommends that for every 1000 dietary calories consumed, the sodium intake should be 1000 mg or less and should not exceed a daily limit of 3300 mg for an adult. What is the yearly limit on sodium intake in pounds? a. 7.3 x 10−3 lb b. 2.7 lb c. 730 lb d. 1.2 x 103 lb e. 1.2 x 106 lbarrow_forwardWhat process takes place in each situation? a. a solid air-freshener cube getting smaller and smallerb. dewdrops forming on leaves in the morningc. steam rising from a hot springd. a crust of ice forming on top of a pondarrow_forwardConvert each temperature to the requested temperature scale. a. 20. °C to TF b. 150. °F to TC c. 298 K to TF d. 75 °C to TKarrow_forward
- B. 1.8 m/s C. 3.6 m/s D. 7.2 m/s 3. What is the momentum of a 45.0-kg dog running south at 9 meters per second? A. 5.00 kg • m/s south B. 45.0 kg • m/s south C. 405 kg • m/s south D. 3650 kg • m/s south A Newton's cradle will continue moving for a time but it eventuallu stons Use what.arrow_forwardA piece of aluminum foil has a known surface density of 15 g/cm2. If a 100-gram hollow cube were constructed using this foil, determine the approximate side length of this cube.a. 1.05 cmb. 1.10 cmc. 2.6 cmd. 6.67 cme. 15 cmarrow_forwardOn which temperature scale (°F, °C, or K) does 1 degree represent the smallest change in temperature? Convert the following temperatures to kelvins. a. 155 °C d. 101 °F b. 200 °C e. 52 °F c. 52 °C f. 196 °F Convert the following Kelvin temperatures to Celsius degrees. a. 275 K d. 77 K b. 445 K e. 10,000. K c. O K f. 2Karrow_forward
- Precipitation Transpiration Evaporation Bedrock Intiltration Run-Off Groundwater Lake What type of energy drives this cycle on Earth? O A. Chemical energy O B. Mechanical energy O C. Electromagnetic energy from the Sun O D. Gravitational potential energy F2 F3 F4 F5 F7arrow_forward1. When steam condenses, A. A physical change occurs. B. A chemical change occurs. C. Both physical and chemical changes occur. D. H20 molecules increase in number. E. H20 molecules decrease in number.arrow_forwardA student added 5 grams of calcium chloride, a white solid substance, to 15 grams of water at 220 C. Several observations were made and the student inferred that a chemical reaction occurred. Which observation best supports the student's inference that a chemical reaction occurred? A. The calcium chloride dissolved in the solution. B. The mass of the solution totals 20 grams. C. The temperature of the solution is 350 C. D. The solution became lighter in color.arrow_forward
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