Concept explainers
(a)
Interpretation:
The number of significant digits in
Concept introduction:
All non-zero digits are significant digits. The significant digits are taken by counting the digits from left to right and starting from the first non zero digit. There are two rules that describes the counting of significant digits,
(1) Count the significant digits starting with the first non-zero digit.
(2) In significant digits placeholder zero will not be counted.
(b)
Interpretation:
The number of significant digits in
Concept introduction:
All non-zero digits are significant digits. The significant digits are taken by counting the digits from left to right and starting from the first non zero digit. There are two rules that describes the counting of significant digits,
(1) Count the significant digits starting with the first non-zero digit.
(2) In significant digits placeholder zero will not be counted.
(c)
Interpretation:
The number of significant digits in
Concept introduction:
All non-zero digits are significant digits. The significant digits are taken by counting the digits from left to right and starting from the first non zero digit. There are two rules that describes the counting of significant digits,
(1) Count the significant digits starting with the first non-zero digit.
(2) In significant digits placeholder zero will not be counted.
(d)
Interpretation:
The number of significant digits of
Concept introduction:
All non-zero digits are significant digits. The significant digits are taken by counting the digits from left to right and starting from the first non zero digit. There are two rules that describes the counting of significant digits,
(1) Count the significant digits starting with the first non-zero digit.
(2) In significant digits placeholder zero will not be counted.
Want to see the full answer?
Check out a sample textbook solutionChapter PSS Solutions
Masteringchemistry With Pearson Etext -- Valuepack Access Card -- For Introductory Chemistry: Concepts And Critical Thinking
- Given that one metric ton = 1000 kg, how many metric tons are inlb?arrow_forwardWhat is the minimum mass of ilmenite FeTiO3, a titanium ore, from which 105.g of pure titanium could be extracted? Be sure your answer has a unit symbol, if necessary, and is rounded to 3 significant digits.arrow_forwardAn unbalanced force of 45 N is applied to a mass 7.3 kg. What will be the resulting acceleration in m/s squaredarrow_forward
- Which of the following objects has the greatest kinetic energy?a 1,000-kg carmoving at 50 km/harrow_forwardWhat is the minimum mass of galena PbS, a lead ore, from which 7.5kg of pure lead 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(a) Read the following description of the element zinc andindicate which are physical properties and which are chemicalproperties. Zinc melts at 420 °C. When zinc granules are added to dilutesulfuric acid, hydrogen is given off and the metal dissolves.Zinc has a hardness on the Mohs scale of 2.5 and a density of7.13 g>cm3 at 25 °C. It reacts slowly with oxygen gas at elevatedtemperatures to form zinc oxide, ZnO. (b) Which properties of zinc can you describe from thephoto? Are these physical or chemical properties?arrow_forward
- What is the mass of a cylinder of lead with a radius of 1 centimeter and a height of 3 centimeters, given that the density of lead is 11.4 (g)/(cm^(3))?arrow_forwardWhat is the number of significant figures does the sum of the following contain .3+ 5.652 , the answer is …………….arrow_forwardA person's heartbeat is 66 beats per minute. If his/her heart beats 3.1e9 times in a lifetime, how long (in whole years) does the person live? Disregard leap years.arrow_forward
- A ball of iron weighs 55.265 g and measures 3.00 cm in diameter. What is the density of the iron ball? (V= -ar', where r is the radius)arrow_forwardIn the year 2013, an estimated amount of 36 billion metrictons (1 metric ton = 1000 kg) of carbon dioxide 1CO22 wasemitted worldwide due to fossil fuel combustion and cementproduction. Express this mass of CO2 in grams without exponentialnotation, using an appropriate metric prefixarrow_forwardWhich of the following is the greatest thickness: 1 mm, 0.1 cm, or 0.001 m?arrow_forward
- Introductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningIntroduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning
- Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning