Concept explainers
Videos
Interpretation:
In the given experiment, the independent and dependent variables needs to be identified. Also, the difference between the two 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 12STP
An independent variable = Sugar cubes, Sugar crystals, or crushed sugar (particle size)
A dependent variable = Time taken (in experiment)for sugarto mix/dissolve.
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.
In the given experiment, an amount of time needed for dissolving is defined as a dependent variable. In short, it is the amount of period needed for dissolving.
The quantity of sugar (crushed) before it is added, defined as an independent variable.
Sugar cubes, Sugar crystals, or crushed sugar (particle size) are an independent variable whereas, rate of dissolving sugar is dependent variable.
Sugar cubes, Sugar crystals, or crushed sugar (particle size) = An independent variable
Time taken (in experiment) for sugar to mix/dissolve = A dependent variable
Chapter 1 Solutions
Glencoe Chemistry: Matter and Change, Student Edition
Additional Science Textbook Solutions
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Introductory Chemistry (6th Edition)
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
Anatomy & Physiology (6th Edition)
Organic Chemistry (8th Edition)
Applications and Investigations in Earth Science (9th Edition)
- Help me answer this practice sheet I found for an answer guidearrow_forwardshow the retrosynthesis of this molecule step by step starting with 1,3-dimethoxy benzene H3CO OH OH OCH 3arrow_forwardConsider the reaction of a propanoate ester with hydroxide ion shown below. A series of four alcohol leaving groups were tested to determine which would be the best leaving group. Based on the pKa values of the alcohols, predict which alcohol would produce the fastest hydrolysis reaction. HO FOR A Alcohol I, pKa =16.0 B Alcohol II, pKa =10.0 C Alcohol III, pKa = 7.2 + ROH D Alcohol IV, pKa = 6.6arrow_forward
- Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic step(s). Be sure to account for all bond-breaking and bond-making steps. :0: NaOH, H₂O 00:4 Na O heat NaO Select to Add Arrows Select to Add Arrows :0: Na a NaOH, H2O :0: NaOH, H2O heat heat Na ONH Select to Add Arrowsarrow_forwardCurved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic step(s). Be sure to account for all bond-breaking and bond-making steps. H CH3NH3+ :0: :0: HO CH3NH2 HH iSelect to Add Arrows i Select to Add Arrows i HH CH3NH3+ CH3NH2 Select to Add Arrows i CH3NH3 CH3NH2 ايكدا HH Select to Add Arrowsarrow_forwardThe reaction is carried out with gases: A → B + C at 300 K. The total pressure is measured as a function of time (table). If the reaction order is 2, calculate the rate or kinetic constant k (in mol-1 L s¹) Ptotal (atm) 492 676 760 808 861 t(s) 0 600 1200 1800 3000arrow_forward
- can someone give a description of this NMR including whether its a triplt singlet doublet where the peak is around at ppm and what functional group it representsarrow_forward1. Determine the relationship between the following molecules as identical, diastereomers, or enantiomers (6 points, 2 points each). OH OH OH A-A OH HOT HO- ACHN and HO- ACHN OH HO HO ° OH and OH OH SH and ...SHarrow_forward20,0 Complete the electron pushing mechanism to y drawing the necomery unicaciones and carved on for Step 1: Add curved arms for the tint step, traiment with NalilĻ. The Nation 458 Step 2: Added for the second step, inalment with), how the "counterion bar Step 3: Daw the products of the last simplom organic and one incoganic spacient, including all nonbondingarrow_forward
- please provide the structure for this problem, thank you!arrow_forwardDraw the Fischer projection from the skeletal structure shown below. HO OH OH OH OH H Q Drawing Atoms, Bonds and Rings Charges I ☐ T HO H H OH HO I CH2OH H OH Drag H OH -CH2OH CHO -COOH Undo Reset Remove Donearrow_forwardplease provide the structure for this problem, thank youarrow_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