Interpretation: The quantitative and qualitative data needs to be differentiated with examples.
Concept introduction: Quantitative data are expressed in numbers. They are measures of counts or values. It can be used to ask "how much" or "how many, " questions after decisive information.
Qualitative data may be indicated by a number code, symbol, or name. They are measures of types. It can be used to ask "why" or “what, ” questions after decisive information.
Answer to Problem 16SSC
Examples of quantitative are:
- 0.102 M NaCl solution.
- The
chemical reaction produced 3.22 moles of product - 1-gallon milk
- 1.5 kg of wood etc
Examples of qualitative data are:
- Color
- Odor
- Reactivity
- Precipitation etc.
Explanation of Solution
Quantitative data: It refers to how much component is given in a sample. For example, 0.102 M NaCl solution
There are various methods that are used to quantify the data. Quantitative data are often analyzed by physical or chemical procedures.
The physical procedure includes AES (Atomic Emission Spectroscopy), X-ray fluorescence spectroscopy, FTIR (Fourier Transform Infrared Spectroscopy), trace element analysis, etc.
The chemical procedure includes inert gas fusion, gravimetric analysis, titration, combustion analysis, etc.
Additionally, mathematics and statistics are also used to quantify the data. Analytical balance or scale is the primary tool to quantify the data.
Quantitative data is used in the exact measurement of products or chemicals for chemical or physical procedures.
Qualitative data: This data is difficult to define. It is difficult to measure. It cannot be expressed numerically. For example, color, precipitation, odor, reactivity, etc.
Qualitative data can be analyzed by chemical techniques, like, flame test, chromatography, distillation, precipitation, extraction, etc.
Qualitative data is used to identify the presence of any compound and element.
Thus, 0.102 M NaCl solution, 1-gallon of milk, 1.5 kg wood, etc are examples of quantitative data. Color, reactivity, precipitation, etc are examples of qualitative data.
Chapter 1 Solutions
Glencoe Chemistry: Matter and Change, Student Edition
Additional Science Textbook Solutions
Campbell Essential Biology (7th Edition)
Microbiology: An Introduction
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Organic Chemistry (8th Edition)
Introductory Chemistry (6th Edition)
College Physics: A Strategic Approach (3rd Edition)
- Laser. Indicate the relationship between metastable state and stimulated emission.arrow_forwardThe table includes macrostates characterized by 4 energy levels (&) that are equally spaced but with different degrees of occupation. a) Calculate the energy of all the macrostates (in joules). See if they all have the same energy and number of particles. b) Calculate the macrostate that is most likely to exist. For this macrostate, show that the population of the levels is consistent with the Boltzmann distribution. macrostate 1 macrostate 2 macrostate 3 ε/k (K) Populations Populations Populations 300 5 3 4 200 7 9 8 100 15 17 16 0 33 31 32 DATO: k = 1,38×10-23 J K-1arrow_forwardDon't used Ai solutionarrow_forward
- In an experiment, the viscosity of water was measured at different temperatures and the table was constructed from the data obtained. a) Calculate the activation energy of viscous flow (kJ/mol). b) Calculate the viscosity at 30°C. T/°C 0 20 40 60 80 η/cpoise 1,972 1,005 0,656 0,469 0,356arrow_forwardDon't used Ai solutionarrow_forwardLet's see if you caught the essentials of the animation. What is the valence value of carbon? a) 4 b) 2 c) 8 d) 6arrow_forward
- A laser emits a line at 632.8 nm. If the cavity is 12 cm long, how many modes oscillate in the cavity? How long does it take for the radiation to travel the entire cavity? What is the frequency difference between 2 consecutive modes?(refractive index of the medium n = 1).arrow_forwardA laser emits a line at 632.8 nm. If the cavity is 12 cm long, how many modes oscillate in the cavity? How long does it take for the radiation to travel the entire cavity? What is the frequency difference between 2 consecutive modes?(refractive index of the medium n = 1).arrow_forwardThe number of microstates corresponding to each macrostate is given by N. The dominant macrostate or configuration of a system is the macrostate with the greatest weight W. Are both statements correct?arrow_forward
- For the single step reaction: A + B → 2C + 25 kJ If the activation energy for this reaction is 35.8 kJ, sketch an energy vs. reaction coordinate diagram for this reaction. Be sure to label the following on your diagram: each of the axes, reactant compounds and product compounds, enthalpy of reaction, activation energy of the forward reaction with the correct value, activation energy of the backwards reaction with the correct value and the transition state. In the same sketch you drew, after the addition of a homogeneous catalyst, show how it would change the graph. Label any new line "catalyst" and label any new activation energy.arrow_forwardHow many grams of C are combined with 3.75 ✕ 1023 atoms of H in the compound C5H12?arrow_forwarde. f. CH3O. יון Br NaOCH3 OCH 3 Br H₂Oarrow_forward
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
ChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill Education
Principles 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 Education
Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY