Interpretation:
If the effect of temperature on volume of balloon is studied and the size of balloon increases when temperature is increased, the independent and dependent variables needs to be explained. The factor which held constant and method to construct a control needs to be explained.
Concept introduction:
The action of measuring the size or quantity of anything is defined as a measurement. A measure of hotness plus coldness of something is described as temperature.
A quest to discover the solution to a question by practicing the scientific method (or process) is described as scientific investigation or experiment.
Answer to Problem 17SSC
The independent variable = Temperature
The dependent variable = Volume (or size of the balloon)
Factor held constant = Balloon
Constructing a control = By keeping a balloon (an identical) at original temperature
Explanation of Solution
A variable being measured (or tested) in a scientific investigation\experiment called dependent variable. A variable that is controlled in a scientific experiment/investigation to examine the effects on the dependent variable called an independent variable. As per the above-mentioned condition, dependent variable is volume because it changes when the volume of balloon changes. In the same statement, the independent variable is temperature.
In a given statement, when the temperature increases, the volume (size) of the balloon will also increase. Thus, volume and temperature will be directly proportional. So, the factor that held constant is the balloon.
Control can be easily constructed by using another balloon (or an identical balloon) at normal room temperature.
Chapter 1 Solutions
Chemistry: Matter and Change
Additional Science Textbook Solutions
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
Human Anatomy & Physiology (2nd Edition)
Chemistry: A Molecular Approach (4th Edition)
Anatomy & Physiology (6th Edition)
Chemistry: Structure and Properties (2nd Edition)
- (a) The following synthesis of the molecule shown in the circle has a major problem. What is this problem? (2 pts) 1) HBr (no peroxides) 2) H- NaNH2 Br 3) NaNH, 4) CH3Br 5) H2, Pd (b) Starting with the molecule shown below and any other materials with two carbons or less, write out an alternate synthesis of the circled molecule. More than one step is needed. Indicate the reagent(s) and the major product in all the steps in your synthesis. (5 pts) 2024 Fall Term (1) Organic Chemistry 1 (Lec) CHEM 22204 02[6386] (Hunter College) (c) Using the same starting material as in part (b) and any other materials win two carpons or less, write out syntheses of the circled molecules shown below. More than one step is needed in each case. Indicate the reagent(s) and the major product in all the steps in your synthesis. You may use reactions and products from your synthesis in part (b). (5 pts)arrow_forwardalt ons for Free Response Questions FRQ 1: 0/5 To spectrophotometrically determine the mass percent of cobalt in an ore containing cobalt and some inert materials, solutions with known [Co?) are prepared and absorbance of each of the solutions is measured at the wavelength of optimum absorbance. The data are used to create a calibration plot, shown below. 0.90- 0.80- 0.70 0.60 0.50 0.40- 0.30 0.20- 0.10- 0.00- 0.005 0.010 Concentration (M) 0.015 A 0.630 g sample of the ore is completely dissolved in concentrated HNO3(aq). The mixture is diluted with water to a final volume of 50.00 ml. Assume that all the cobalt in the ore sample is converted to Co2+(aq). a. What is the [Co2] in the solution if the absorbance of a sample of the solution is 0.74? 13 ✗ b. Calculate the number of moles of Co2+(aq) in the 50.00 mL solution. 0.008 mols Coarrow_forwardPlease correct answer and don't used hand raitingarrow_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