Concept explainers
Iron pyrite (fool's gold, page 11) has a shiny golden metallic appearance. Crystals are often in the form of perfect cubes. A cube 0.40 cm on each side has a mass of 0.064 g.
(a) Which of these observations are qualitative and which are quantitative?
(b) Which of the observations are extensive and which are intensive?
(c) What is the density of the sample of iron pyrite?
Trending nowThis is a popular solution!
Learn your wayIncludes step-by-step video
Chapter 1 Solutions
Chemistry & Chemical Reactivity
Additional Science Textbook Solutions
EBK INTRODUCTION TO CHEMISTRY
Chemistry: An Introduction to General, Organic, and Biological Chemistry (12th Edition) - Standalone book
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
Inorganic Chemistry
Chemistry by OpenStax (2015-05-04)
- Which piece of equipment would you use to measure 7.10 mL of CuSO4 (aq)?arrow_forward(A)18.7g NO2 express your answer in moles to three significant figures. (B)1.88 kgCO2 express your answer in moles to three significant figures. (C) 48.8 g KNO3 express your answer in moles to three significant figures. (D) 116.2 kgNa2SO4 express your answer in moles to four significant figures.arrow_forward(b) Zn(NO3)2(aq) + 2 N2OH(aq) → Zn(OH)2(s) + 2 NaNO3(aq) Write the complete ionic equation. (Include states-of-matter under the given conditions in your answer. Use the lowest possible whole number coefficients.) chemPad О Help Greek List the spectator ions. (Include states-of-matter under the given conditions in your answer. Separate substances in a list with a comma. Use the lowest possible coefficients.) chemPad О Help X.x" →=- Greek Write the net ionic equation. (Include states-of-matter under the given conditions in your answer. Use the lowest possible whole number coefficients.) chemPad О Help Greek Zu2+ Zu+2 Classify the type of reaction given for (b). (Select all that apply.) a combination reaction na combustion reaction O a decomposition reaction V a metathesis reaction V a precipitation reactionarrow_forward
- If 25.00 mL of a solution of sodium hydroxide (NaOH) is exactly neutralised by 13.47 mL of 0.131 mol L sulfuric acid (H₂SO4), what is the concentration of the NaOH 2 NaOH(ag) + H₂SO(aq) Na₂SO4(aq) + 2 H₂00) Give your answer to three (3) significant figures Do not use scientific notation to express your answer. You do not need to include units with your answer.arrow_forwardMethyl benzoate is an oily liquid with a boiling point of 199°C. What volume of methyl benzoate is needed to prepare 5.8 grams of benzoic acid? The density of methyl benzoate is 1.08 g·cm⁻³. Molar masses are given in Figure 4. [Give only the number without the unit. Give the answer in cubic centimetres and round to 1 decimal place. Use a decimal point.] * Your answerarrow_forwardA sample of an ethanol-water solution has a volume of 54.4 cm^3 and a mass of 49.9 g. What is the percentage of ethanol (by mass) in the solution? (Assume that there is no change in volume when the pure compounds are mixed.) The density of ethanol is 0.789 g/cm^3 and that of water is 0.998 g/cm^3.arrow_forward
- You are given a hammer a battery, a bulb, wires and switch(a) How could you use them to distinguish between samples of metals and non metals?(b) Assess the usefulness of these tests to distinguish between metals and non-metalsarrow_forwardA geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration of 25.·gL−1 . The geochemist also measures the concentration of salt in several nearby non-isolated lakes, and finds an average concentration of 4.2·gL−1 . Assuming the salt concentration in Lake Parsons before it became isolated was equal to the average salt concentration in nearby non-isolated lakes, calculate the percentage of Lake Parsons which has evaporated since it became isolated. Round each of your answers to 2 significant digits.arrow_forwardIn an experiment of production of aluminum hydroxide Al(OH)3 by reacting AlCl3 with NaOH, the student expected theoretically to get 2.66 g of solid aluminum hydroxide. His results for the experiment repeated 3 times are as follows: Experiment no. 1 2 3 Actual mass of Al(OH)3 obtained (in grams) 2.57 1.89 2.31 a) Comment on the precision and accuracy of his experiment b) In your opinion. What could be the source of error in these experiments? c) Calculate the percent yield of Al(OH)3 obtained for all the experiments together. (show all your calculations, units and significant figures are importantarrow_forward
- 51. A concentrated perchloric acid solution is 65.8% HClO4 by mass and its density is 1.68 g mL−1. What volume (in litres) of the concentrated perchloric acid solution is needed to make 1.81 L of 2.62 mol L−1 HClO4(aq)?arrow_forwardThe area of the 48 contiguous states is 3.02 × 10^(6) mi^(2). Assume that these states are completely fl at (no mountains and no valleys). What volume of water, in liters, would cover these states with a rainfall of two inches?arrow_forwardA geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration of 69.32 g.L The geochemist also measures the concentration of salt in several nearby non-isolated lakes, and finds an average concentration of 5.02 g⋅L¯¹. Assuming the salt concentration in Lake Parsons before it became isolated was equal to the average salt concentration in nearby non-isolated lakes, calculate the percentage of Lake Parsons which has evaporated since it became isolated. Be sure your answer has the correct number of significant digits.arrow_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