Concept explainers
Practice ProblemATTEMPT
Determine the number of significant figures in the following measurements:
Want to see the full answer?
Check out a sample textbook solutionChapter 1 Solutions
Chemistry
- The radius of an atom of krypton (Kr) is about 1.9 Å. (a) Express this distance in nanometers (nm). nm Express this distance in picometers (pm). pm (b) How many krypton (Kr) atoms would have to be lined up to span 1.0 mm? atoms (c) If the atom is assumed to be a sphere, what is the volume in cm³ of a single krypton (Kr) atom? cm³arrow_forwardAn aluminum plate has a diameter of 25.0 cm and weighs 335 g. If the density of aluminum is 2.70 g/cm3, what is the thickness of the plate? (A) 0.632 mm (B) 2.53 mm (C) 3.16 mm (D) 1.58 mmarrow_forwardPlatinum, Pt, is one of the rarest of the metals. Worldwideannual production is only about 130 tons. Platinum has a densityof 21.4 g>cm3. If thieves were to steal platinum from a bank usinga small truck with a maximum payload capacity of 900 lb, howmany 1 L bars of the metal could they take?(a) 19 bars (b) 2 bars (c) 42 bars (d) 1 bar (e) 47 barsarrow_forward
- To demonstrate your understanding of the concept of significant figures determine the number of significant figures in the following data: (a) 0.0037 (g) 3007 (c) 700.0 (i) 0.001060 (b) 152 000 (h) 6070 (d) 205 (e) 337 345 000 (f) 2.0035arrow_forwardComplete the following table Material Mass of Displaced Water (g) Mass of Sample (g) Volume of Sample (mL) Density of Material (g/mL) Metal 1 0.36 3.17 (A) (D) Metal 2 0.46 3.73 (B) (E) Metal 3 0.47 3.67 (C) (F)arrow_forwardSuppose that instead of using the cylindrical rod of Example 1-2 to prepare a 1.000 kg mass we were to use a solid spherical ball of copper. What must be the radius of this ball? (d = 8.96g)arrow_forward
- 1) A 1.728 in' of a substance has a mass of 36 grams. What is the density of the substance in g/cm'? (1 inch= 2.54 cm) (a) 21 (b) 5.6 (c) 30, (d) 14 (e) 1.3arrow_forwardWhich of the following will be homogeneous mixture? (A) All of them (B) N2 and Ar (C) C2H5OH and H2O (D) NH4Cl and H2O (E) C6H6 and C7H8arrow_forward3) Multiply 6.4 x 10^-3 times 8.0 x 10^7 and express the answer in scientific notation.(a) 5.1 x 10^-21(b) 5.1 x 10^–3(c) 5.1 x 10^3(d) 5.1 x 10^4(e) 5.1 x 10^5 Step by step 4) Round off the following measurement to three significant digits: 14,546 cm.(a) 145 cm (b) 146 cm(c) 14,500 cm (d) 14,600 cm(e) 15,000 cm Step by steparrow_forward
- Which quantity in each of the following pairs is larger? (a) 5.63 * 106 cm or 6.02 * 101 km(b) 46µs or 3.2 * 10-2 ms(c) 200,098 g or 17 * 101 kgarrow_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 a particular instant in time, the Earth is judged to be92,955,000 miles from the Sun. What is the distance inkilometers to four significant figures? (See the back insidecover for the conversion factor).(a) 5763 * 104 km (b) 1.496 * 108 km (c) 1.49596 * 108 km(d) 1.483 * 104 km (e) 57,759,000 kmarrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY