Chemistry: Structure and Properties (2nd Edition)
2nd Edition
ISBN: 9780134293936
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter E, Problem 10E
When adding or subtracting measured quantities, what determines the number of significant figures in the result?
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When adding or subtracting measured quantities, what determines the number of significant figures in the result?
A student determined the mass of a sample in a beaker by subtracting the mass of the empty beaker (22.566 g) from the mass of the beaker containing the sample (22.656 g). How many significant figures should be reported for the mass of the sample?
When you perform the following operations, how many significant figures should your
answer have? Assume these are measured quantities.
312.3415 + 0.0100 =
07
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1
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Chapter E Solutions
Chemistry: Structure and Properties (2nd Edition)
Ch. E - What are the standard SI base units of length,...Ch. E - What are the three common temperature scales? Does...Ch. E - What are prefix multipliers? List some examples.Ch. E - What is a derived unit? List an example.Ch. E - Explain the relationship between the reliability...Ch. E - What is the significance of the number of digits...Ch. E - Explain the difference between precision and...Ch. E - Prob. 8ECh. E - When multiplying or dividing measured quantities,...Ch. E - When adding or subtracting measured quantities,...
Ch. E - Explain the difference between density and mass.Ch. E - Explain the difference between intensive and...Ch. E - Prob. 13ECh. E - Prob. 14ECh. E - Prob. 15ECh. E - Prob. 16ECh. E - What is dimensional analysis?Ch. E - How should units be treated in calculations?Ch. E - Convert each temperature. a. 32 °F to °C...Ch. E - Convert each temperature. a. 212 °F to °C...Ch. E - The coldest temperature ever measured in the...Ch. E - Prob. 22ECh. E - Use the prefix multipliers to express each...Ch. E - Use prefix multipliers to express each measurement...Ch. E - Use scientific notation to express each quantity...Ch. E - Use scientific notation to express each quantity...Ch. E - Complete the table.Ch. E - Complete the table.Ch. E - Express the quantity 254,998 m in each unit. a. km...Ch. E - Express the quantity 556.2 × 10-12 s in each unit....Ch. E - How many 1-cm squares does it take to construct a...Ch. E - How many 1-cm cubes does it take to construct a...Ch. E - Convert 15.0 L to each unit. a.mL b. cm3 c. gal d....Ch. E - Convert 4.58 x 103 cm3 to each unit. a. L b. mL c....Ch. E - A ruler used to measure a penny has markings every...Ch. E - A scale used to weigh produce at a market has...Ch. E - Read each measurement to the correct number of...Ch. E - Read each measurement to the correct number of...Ch. E - For each number, underline the zeroes that are...Ch. E - For each number, underline the zeroes that are...Ch. E - How many significant figures are in each number?...Ch. E - How many significant figures are in each number?...Ch. E - Which numbers are exact (and therefore have an...Ch. E - Indicate the number of significant figures in each...Ch. E - Round each number to four significant figures. a....Ch. E - Round each number to three significant figures. a....Ch. E - Calculate to the correct number of significant...Ch. E - Calculate to the correct number of significant...Ch. E - Calculate to the correct number of significant...Ch. E - Calculate to the correct number of significant...Ch. E - Calculate to the correct number of significant...Ch. E - Calculate to the correct number of significant...Ch. E - A new penny has a mass of 2.49 g and a volume of...Ch. E - A titanium bicycle frame displaces 0.314 L of...Ch. E - Glycerol is a syrupy liquid used in cosmetics and...Ch. E - An allegedly gold nugget is tested to determine...Ch. E - Ethylene glycol (antifreeze) has a density of 1.11...Ch. E - Prob. 58ECh. E - A small airplane takes on 245 L of fuel, If the...Ch. E - Human fat has a density of 0.918 g/cm3. How much...Ch. E - Perform each unit conversion. a. 27.8 L to cm3 b....Ch. E - Prob. 62ECh. E - Prob. 63ECh. E - Prob. 64ECh. E - A runner wants to run 10.0 km. She knows that her...Ch. E - Prob. 66ECh. E - A European automobile has a gas mileage of 17...Ch. E - A gas can holds 5.0 gallons of gasoline. Express...Ch. E - A house has an area of 195 m2. What is its area...Ch. E - Prob. 70ECh. E - The average U.S. farm occupies 435 acres. (1 acre...Ch. E - Total U.S. farmland occupies 954 million acres....Ch. E - An acetaminophen suspension for infants contains...Ch. E - An ibuprofen suspension for infants contains 100...Ch. E - Convert between energy units. a. 534 kWh to J b....Ch. E - Prob. 76ECh. E - Suppose that a person eats 2387 Calories per day....Ch. E - A particular frost-free refrigerator uses about...Ch. E - Prob. 79ECh. E - Prob. 80ECh. E - A solid gold cylinder sits on a weight-sensitive...Ch. E - The proton has a radius of approximately 1.0 ×...Ch. E - The density of titanium is 4.51 g/cm3. What is the...Ch. E - The density of iron is 7.86 g/cm3. What is its...Ch. E - A steel cylinder has a length of 2.16 in, a radius...Ch. E - A solid aluminum sphere has a mass of 85 g. Use...Ch. E - Prob. 87ECh. E - Prob. 88ECh. E - The Toyota Prius, a hybrid electric vehicle, has a...Ch. E - The Honda Insight, a hybrid electric vehicle, has...Ch. E - The single proton that forms the nucleus of the...Ch. E - A sample of gaseous neon atoms at atmospheric...Ch. E - Prob. 93ECh. E - The world’s record in the 100-m dash is 9.58 s,...Ch. E - Table salt contains 39.33 g of sodium per 100 g of...Ch. E - Prob. 96ECh. E - A length of #8 copper wire (radius = 1.63 mm) has...Ch. E - Rolls of aluminum foil are 304 mm wide and 0.016...Ch. E - Liquid nitrogen has a density of 0.808 g/L and...Ch. E - Mercury is often used in thermometers. The mercury...Ch. E - Prob. 101ECh. E - In 1999, scientists discovered a new class of...Ch. E - Prob. 103ECh. E - Nanotechnology, the field of building ultrasmall...Ch. E - Prob. 105ECh. E - A box contains a mixture of small copper spheres...Ch. E - A cube has an edge length of 7 cm. If it is...Ch. E - Prob. 108ECh. E - For each box, examine the blocks attached to the...Ch. E - Look up the measurement of the approximate...Ch. E - Prob. 111ECh. E - One inch is equal to 2.54 cm. Draw a line that is...Ch. E - Convert the height of each member in your group...Ch. E - Prob. 114ECh. E - Convert 85.0 °F to k. 358 k 181.1 k 302.6 k 29.4 kCh. E - Express the quantity 33.2 × 10-4 m in mm. 0.332 mm...Ch. E - How many significant figures are there in the...Ch. E - Perform the calculation to the correct number of...Ch. E - Perform the calculation to the correct number of...Ch. E - What is the mass of a 1 .75-L sample of a liquid...Ch. E - Convert 1,285 cm2to m2. 12.85 m2 0.1285 m2 1.285 ×...Ch. E - Prob. 8SAQCh. E - A solid metal sphere has a radius of 3.53 cm and a...Ch. E - A German automobile’s gas mileage is 22km/L....Ch. E - A wooden block has a volume of 18.5 in3. Express...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Express the measurements to the requested number of significant figures. (a) 96,485 J/C to three significant figures (b) 2.9979 g/cm3 to three significant figures (c) 0.0597 mL to one significant figure (d) 6.626 1034 kg to two significant figuresarrow_forwardExactly 1 liter of a solution contains 31.4 grams of a certain dissolved substance. What mass in grams is in exactly 2 liters? How about 7.37 liters? Express the results in the proper number of significant figures.arrow_forwardperform the following calculation, reporting your answer to the correct number of significant figures and with the correct unit. 123.4 g x (1 kg/1000 g)=arrow_forward
- Complete the following arithmetic problem and report the answer to the correct number of significant figures. (Report your answer in standard notation.)arrow_forwardDo the following multiplication and division calculations. Give a final answer with the correct number of significant figures and the correct units. Units can cancel or multiply just like number factors. (2.5 x 103 m/s) x (5.00 x 10-6 s) = ?arrow_forwardAn unknown object is placed on a balance, which then reads 6.122 g. Its volume is measured to be 3.39 cm³. Find the density of this object by dividing mass by volume. Express your answer in grams per cubic centimeter to the appropriate number of significant figures. g/cm³arrow_forward
- A student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. 19. mol kg = ? mol g x10 ロ･ロ X 3 00 4arrow_forwardWhen adding or dividing measured numbers, we don’t count significant figures. Instead, we look at the precision of the measured numbers. The answer can only be as precise as the least precise measurement.arrow_forwardA student sets up the following equation to convert a measurement. (The ? stands for a number the student is going to calculate.) Fill in the missing part of this equation. 0.050 mol kg = ? mol g 口。 x10 X μ 0|0 Garrow_forward
- Use significant figures to express the inherent uncertainty in measured quantities and in calculations?arrow_forwardPlease answer this question as fast as you can please and tahnk you. I will afterwards write an wonderful review on solving the question. Thank you. Carry out the following calculations, making sure that your answer has the correct number of significant figures and units. 8.69 mL ÷ (15.3 mL - 8.94 mL)arrow_forwardA student adds 3.993 grams of salt to a beaker and then adds an additional 69.220 grams of water to the beaker. After stirring, the salt completely dissolves in the water. Calculate the % salt by mass of this solution. Do not round off your answers until the very end of the calculations. Report your answer to the correct number of significant figures, and do not include units or the % sign in your answer.arrow_forward
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