Chemistry: Structure and Properties Plus MasteringChemistry with eText -- Access Card Package
1st Edition
ISBN: 9780321729736
Author: Nivaldo J. Tro
Publisher: PEARSON
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My Data:
0.033 g/mL
Class Data:
0.02904 g/mL
0.0256 g/mL
Based on my results (0.033 g/mL), is the class data (0.02904 and 0.0256) precise, accurate, both, or neither
Convert 8.40 g/cm2 to mg/mm2. Round your answer to 1 decimal place. No units needed.
(a) How many picometers are there in 1 m? (b) Express6.0 * 103 m using a prefix to replace the power of ten.(c) Use exponential notation to express 4.22 mg in grams.(d) Use decimal notation to express 4.22 mg in grams.
Chapter A2 Solutions
Chemistry: Structure and Properties Plus MasteringChemistry with eText -- Access Card Package
Ch. A2 - For each number, underline the zeroes that are...Ch. A2 - Prob. 2ECh. A2 - Prob. 3ECh. A2 - How many significant figures are in each number?...Ch. A2 - Prob. 5ECh. A2 - Indicate the number of significant figures in each...Ch. A2 - Round each number to four significant figures. a....Ch. A2 - Round each number to three significant figures. a....Ch. A2 - Prob. 9ECh. A2 - Prob. 10E
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- A sample of an unknown metal has a mass of 35.4 g and a volume of 3.11 cm3. Calculate it's densityarrow_forward58. Perform each calculation to the correct number of significantfigures.(a) 89.3 * 77.0 * 0.08(b) (5.01 * 105) , (7.8 * 102)(c) 4.005 * 74 * 0.007(d) 453 , 2.031arrow_forwardCalculate and record the average density of a penny (in g/mL) that is made after 1982. 95 percent copper and 5 percent zinc made up the composition of pennies before 1982.arrow_forward
- Use significant figures rulearrow_forwardCalculate to the correct number of significant figures.a. 0.004 + 0.09879 b. 1239.3 + 9.73 + 3.42c. 2.4 - 1.777 d. 532 + 7.3 - 48.523arrow_forwardDetermine the number of significant figures. 1. 3.4 / 0.025356 + 236.00 - 76.357 2. 5.6786 + 246.346133 + 0.3257413 - 0.9246435arrow_forward
- The most common units for density are ___________.arrow_forwardWhat exponent or power of ten would you use to express how many meters are in a kilometer? a. 105 b. 103 c. 104 d. 102arrow_forwardConsider multiplying “26.2” by “16.43.” What would a mathematician say the answer is? What would a scientist say? Justify the scientist’s answer, not merely citing the rule, hut explaining it.arrow_forward
- At sea, distances are measured in nautical miles and speeds are expressed in knots. 1 nautical mile =6076.12ft 1 knot =1 nautical mi/h (exactly) (a) How many miles are in one nautical mile? (b) How many meters are in one nautical mile? (c) A ship is traveling at a rate of 22 knots. Express the ship's speed in miles per hour.arrow_forwardFor Exercises 57 and 58, apples cost $1.75 per pound. . What conversion factor is appropriate to express the cost of 5.3 lb of apples? . What conversion factor could be used to determine how many pounds of apples could be bought for $25.00?arrow_forwardConsider the calculation indicated below: 2.210.072330.154.995 Explain why the answer to this calculation should be reported to only two significant digits.arrow_forward
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Trigonometry: Radians & Degrees (Section 3.2); Author: Math TV with Professor V;https://www.youtube.com/watch?v=U5a9e1J_V1Y;License: Standard YouTube License, CC-BY