(a)
Interpretation: The correct number of significant figure has to be given..
Concept introduction:
Significant of zeroes:
- Zeroes between two other significant digits are significant.
- Zeroes to the right of a nonzero number, and also to the right of decimal place, are significant.
- Zeroes that are placeholders are not significant.
Rules used for significant figures in calculations:
Rule 1: When adding or subtracting numbers, the number of decimal places in the answer is equal to the number of decimal places in the number with fewest digits after the decimal.
Rule 2: In multiplication or division, the number of significant figures in the answer is determined by the quantity with the fewest significant figures.
Rule 3: When a number is rounded off, the last digit to be retained is increased by one only if the following digit is 5 or greater.
(a)
Answer to Problem 26RPS
Explanation of Solution
In
The multiplication of
The number of significant figures should the answer contain is the fewest number of significant figures of the given quantity. All the three quantities possess same significant figures. Hence, the answer should be written as
(b)
Interpretation: The correct number of significant figure has to be given..
Concept introduction:
Significant of zeroes:
- Zeroes between two other significant digits are significant.
- Zeroes to the right of a nonzero number, and also to the right of decimal place, are significant.
- Zeroes that are placeholders are not significant.
Rules used for significant figures in calculations:
Rule 1: When adding or subtracting numbers, the number of decimal places in the answer is equal to the number of decimal places in the number with fewest digits after the decimal.
Rule 2: In multiplication or division, the number of significant figures in the answer is determined by the quantity with the fewest significant figures.
Rule 3: When a number is rounded off, the last digit to be retained is increased by one only if the following digit is 5 or greater.
(b)
Answer to Problem 26RPS
Explanation of Solution
In
The value of
(c)
Interpretation: The correct number of significant figure has to be given..
Concept introduction:
Significant of zeroes:
- Zeroes between two other significant digits are significant.
- Zeroes to the right of a nonzero number, and also to the right of decimal place, are significant.
- Zeroes that are placeholders are not significant.
Rules used for significant figures in calculations:
Rule 1: When adding or subtracting numbers, the number of decimal places in the answer is equal to the number of decimal places in the number with fewest digits after the decimal.
Rule 2: In multiplication or division, the number of significant figures in the answer is determined by the quantity with the fewest significant figures.
Rule 3: When a number is rounded off, the last digit to be retained is increased by one only if the following digit is 5 or greater.
(c)
Answer to Problem 26RPS
Explanation of Solution
In
The value of
(d)
Interpretation: The correct number of significant figure has to be given..
Concept introduction:
Significant of zeroes:
- Zeroes between two other significant digits are significant.
- Zeroes to the right of a nonzero number, and also to the right of decimal place, are significant.
- Zeroes that are placeholders are not significant.
Rules used for significant figures in calculations:
Rule 1: When adding or subtracting numbers, the number of decimal places in the answer is equal to the number of decimal places in the number with fewest digits after the decimal.
Rule 2: In multiplication or division, the number of significant figures in the answer is determined by the quantity with the fewest significant figures.
Rule 3: When a number is rounded off, the last digit to be retained is increased by one only if the following digit is 5 or greater.
(d)
Answer to Problem 26RPS
Explanation of Solution
The division and multiplication of:
Finally, on the multiplication of
Want to see more full solutions like this?
Chapter 1 Solutions
Chemistry & Chemical Reactivity
- The radius of a barium atom is 2.22X10⁻¹⁰m. What is its ra-dius in angstroms (Å)?arrow_forwardIs the separation of the mixture shown here a physical orchemical process?arrow_forwardWhat is the minimum mass of magnetite Fe3O4 , a iron ore, from which 1.0kg of pure iron could be extracted? Be sure your answer has a unit symbol, if necessary, and is rounded to the correct number of significant digits.arrow_forward
- The drug cyclophosphamide is administered for breast cancer at a daily dose of 100 mg/m^2 for up to 14 consecutive days. The BSA of a patient measuring 5 ft and 1 inch in height and weighing 95 lbs is ____ m^2, and total quantity administered over the 2-week period is ____ g.arrow_forwardA student determined in a set of four experiments that the density of magnesium metal was 1.66 g/ml,1.65 g/ml, 1.67 g/ml, 1.67 g/ml. The accepted value for its density is 1.72 g/ml. What can you concludeabout the precision and accuracy of the student’s data?arrow_forwardWhich of the followings is the volume of a metal cylinder with 40 mm for diameter, 3.0 cm for height?arrow_forward
- The radius of a copper (Cu) atom is roughly 1.3 ×10−10 m. How many times can you divide evenly a 446.7−cm long piece of copper wire until it is reduced to two separate copper atoms? (Assume there are appropriate tools for this procedure and that copper atoms are lined up in a straight line, in contact with each other. Round off your answer to an integer.)arrow_forwardIn the area of nano-chemistry, particles defined as nanoparticles range in size from 1-2500 nm. 1 nm is equivalent to 1 × 10–9 m. If the size of the particles that make up a particular material is 1.23 × 10–8 cm, what is this size in nanometers?arrow_forwardWhat is the density of copper (in g/cm3) if a rectangular bar measuring 0.60 cm in height, 2.04 cm in width, and 12.00 cm in length has a mass of 131.6 g?arrow_forward
- The radius of a copper (Cu) atom is roughly 1.3 × 10−10 m. How many times can you divide evenly a 223.3−cm long piece of copper wire until it is reduced to two separate copper atoms? (Assume there are appropriate tools for this procedure and that copper atoms are lined up in a straight line, in contact with each other. Round off your answer to an integer.)arrow_forwardSuppose that instead of using the cylindrical rod of Example 1-2 to prepare a 1.000 kgmass we were to use a solid spherical ball of copper What must be the radius of this ball?arrow_forwardAt 25 C, the density of water is 0.997 g/cm3, whereas the density of ice at 10 C is 0.917 g/cm3. (a) If a soft-drink can (volume = 250. mL) is filled completely with pure water at 25 C and then frozen at - 10 C, what volume does the ice occupy? (b) Can the ice be contained within the can?arrow_forward
- General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningIntroduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
- Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningIntroductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage Learning