2.49 Write the equality and two conversion factors, and identify the numbers as exact or give the number of significant figures for each of the following: a. A bee flies at an average speed of 3.5 m per second. b. The Daily Value (DV) for potassium is 3.5 g. c. An automobile traveled 26.0 km on 1 L of gasoline. d. The pesticide level in plums was 29 ppb. e. Silicon makes up 28.2% by mass of Earth's crust.

2.49 Write the equality and two conversion factors, and identify the numbers as exact or give the number of significant figures for each of the following: a. A bee flies at an average speed of 3.5 m per second. b. The Daily Value (DV) for potassium is 3.5 g. c. An automobile traveled 26.0 km on 1 L of gasoline. d. The pesticide level in plums was 29 ppb. e. Silicon makes up 28.2% by mass of Earth's crust.

General Chemistry - Standalone book (MindTap Course List)

11th Edition

ISBN:9781305580343

Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Chapter1: Chemistry And Measurement

Section: Chapter Questions

Problem 1.96QP: When chlorine gas is bubbled into a solution of sodium bromide, the sodium bromide reacts to give...

See similar textbooks

Similar questions

8. A 12-oz can of soda costs 50-cents. A 2.0-L of the same soda is on sale for $1.29. How many times more expensive is it to buy the 12-oz can in comparison to the 2.0-L bottle if buying equivalent volumes of soda? (1.00 L = 1.057 qt., 1 qt. = 32 oz.) a. 4.2 b. 2.8 c. 1.9 d. 2.2
7. 12.0 mL of A weighs 10.8 g; and 16.0 mL of B weighs 14.4 g. A. A has a higher density than B. B. B has a higher density than A. C. A and B have equal densities. D. There is insufficient information to answer this question.
#1. How long (in hours) will it take for light that travels at 3.00x108 m/s to cover the distance from the sun to the earth of 9.296x107 miles? #2. What is the density (g/mL) of a cube that has equal sides of 12 inches and weighs 491 pounds? The volume of a cube can be calculated by: lxwxh. Which metal is it considering the following densities: Cu: 8.96g/cm3, Al: 2.70g/cm3, Fe: 7.87g/cm3 and Zn: 7.13g/cm3? #3. What is the % yield of a reaction that created 65.2 grams of Ag from 70.2 grams of Cu?2AgNO3+Cu 2Ag + Cu(NO3) #4. How much of the excess reactant remains after 39.78 grams of C8H18 is mixed with 59.3 grams of O2 in the reaction: 2C8H18 + 25O2 16CO2 + 18H2O?
9. Reports shows that exposure of asthmatic individuals to a level of 0.200 ppm NO2 causes airway hyperresponsiveness. Given the density of air is 1.18 kg/m³, calculate how many grams of NO2 in a 1.00 m3 room would cause asthmatic individuals hyperresponsiveness.
4Fe + 3O2 ---> 2Fe2O3You have a bicycle made of iron that you left outside all winter. Iron (Fe) reacts with oxygen to make rust (Fe2O3) according to the reaction above. Assuming no rust is lost, in the spring, after rusting all winter, your bicycle will weigh _____ compared to the original weight. a. more b. less c. the same d. cannot be determined
Aktiv Chemistry Google D... € echo 1 2.54 2.54 1 in 2.54 cm³ A popular car has an engine that is reported to have a volume of 4320 cm³. What is 30 the size in cubic inches ? 17 (0.01)³ in sm 264 X Moodle at Southea... Aktiv Chemistry GApopularcarhasanenginethatisre x + 0.01 X 7.08 x 104 Question 9 of 33 (1000)³ 1 2.54 (2.54)³ 16.387 in стве 100 < ★ (1) ³ X 4320 1 1 2.54 in 1.70 × 10³ cm (100)³ 1000
4. If a car's fuel economy in Mexico is rated 13.2 km/lL, what is the rating in miles per gal (mile/gal)? 5. Using the metric prefix handout, perform the following conversions: a. 25 L = ? GL 6. b. 8.08 Mm = ? nm 6. The area of a table is 325 cm2. What is the area of the table in square inches (in²)? 0. 15500031 50.3751 in 7. A room has a volume of 299 m3. What is the volume of the room in yd3? 391 yed 3 299gr? x lo30795 yd_391 yd3 - अआपव
6. Every morning I use 1 cup of Bisquick pancake mix to make pancakes for my kids. How many boxes of Bisquick do I use in 1 year? 7. How many meters per second (m/s) is a car moving if it is going 55 MPH? Hints: "MPH" is miles per hour or (miles/hour). A car that moves at 55 MPH is going 55 miles for every 1 hour, and the car travels 110 miles after 2 hours, 220 miles after 4 hours, etc. 110 miles 110 miles per hour = 55 miles per hour. 2 %3D Notice that the miles divided by time is 2 hours So, if a car is going 55 miles per hour, convert 55 miles into meters, convert 1 hour into seconds, and meters or then divide the answers to calculate meters per second (or nd second -). S.
b. (6.0241 X 1.24) / (.0147 X 10.0) = * c. The density of an object that has a mass of 16.0 grams and a volume of 35 mL? d. The volume of 65.4 grams of silver if the density of silver is 10.5 g/mL? e. An object is placed in a graduated cylinder containing 20.5 mL of water. The water level rose to 28.5 mL. If the object has a mass of 42.3 grams, what is the density of the object? S f. A student measures the volume and mass of a piece of sodium chloride and calculates the density of sodium chloride to be 2.245 g/cm³. He then looks in his textbook and finds that the actual density of sodium chloride is 2.156 g/cm³. What is his percent error?
Twelve (12) samples were weighed on a balance, their combined mass is 13.62 g. With the appropriate number of significant digits, what is the average mass of each sample? 1.1 g 1.14 g 1.135 g 1.1350 g it is impossible to determine with the given information
Which of the following is greater? a. 8.5 grams per milliliter or 8500 Kg/ m3 b. 5 x 10-2 kg/m3 or 5 x 10-4 gr/cm3.
Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction in which water (H₂O) and carbon dioxide (CO₂) chemically react to form the simple sugar glucose (C6H₁2O6) and oxygen gas (0₂). 12 What mass of simple sugar glucose is produced by the reaction of 6.8 g of carbon dioxide? Round your answer to 2 significant digits. 0 g x10 X Ś

SEE MORE QUESTIONS

Recommended textbooks for you

General Chemistry - Standalone book (MindTap Cour…

Chemistry

ISBN:

9781305580343

Author:

Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Publisher:

Cengage Learning

Chemistry & Chemical Reactivity

Chemistry

ISBN:

9781337399074

Author:

John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:

Cengage Learning

Chemistry

ISBN:

9781133611097

Author:

Steven S. Zumdahl

Publisher:

Cengage Learning

Chemistry

ISBN:

9781305957404

Author:

Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:

Cengage Learning

General Chemistry - Standalone book (MindTap Cour…

Chemistry

ISBN:

9781305580343

Author:

Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Publisher:

Cengage Learning

Chemistry & Chemical Reactivity

Chemistry

ISBN:

9781337399074

Author:

John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:

Cengage Learning

Chemistry

ISBN: