Study Guide For Chemistry: Structure And Properties
1st Edition
ISBN: 9780321965615
Author: Nivaldo J. Tro, Jennifer Shanoski
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
Study Guide For Chemistry: Structure And Properties
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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