Connect 1-Semester Online Access for Principles of General, Organic & Biochemistry
2nd Edition
ISBN: 9780077633707
Author: Janice Smith
Publisher: Mcgraw-hill Higher Education (us)
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 7.5, Problem 7.14P
Interpretation Introduction
Interpretation:
The concentration in weight/volume percent of ethanol and antiseptic has to be calculated.
Concept Introduction:
Weight/volume percent: Weight/volume percent is defined as the concentration expressed in terms of grams of solute dissolved in volume of solution. Weight/volume percent is given as,
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Part 1. One gram of caffeine dissolves in 55 ml of water; 7 ml of dichloromethane (DCM); 530 ml of diethyl ether;
and 100 ml of benzene.
Covert the solubility of caffeine in these four solvents into units of mg/ml.
a) Solubility of caffeine in mg/ml in water:
b) Solubility of caffeine in mg/ml in DCM:
c) Solubility of caffeine in mg/ml in Diethyl Ether:
d) Solubility of caffeine in mg/ml in Benzene:
Which is the optimal solvent to extract caffeine from an aqueous solution? Why?
Part 1 Continued: Use intermolecular force (IMF), provide a brief explanation on the solubility of caffeine in water,
diethyl ether, observed above. (Hint: draw the skeletal structures for caffeine, DCM and diethyl ether)
In the data given, it is all about measuring the concentration of salt solution using salometer in different treatments such as distilled water, tap water and boiled. In the data how to know which of the three (3) is better? what are their differences?
Materials Needed
solid I2
solid CUSO4-5H20
food dye
solid (NH4)2SO4
heavy metals waste container
halogenated waste container
non-halogenated waste container
semi-micro test tubes and rack
regular test tubes and rack
squash pipettes
acetone
cyclohexane
propan-2-ol
Method
Part A: Solubility of ionic and molecular solids
1.
Place a small amount (about the size of 1 grain of rice, see picture) of copper sulfate into each of three DRY
semi-micro test tubes. Add 20 drops of water to the first test tube and gently flick the test tube with your
finger to ensure mixing.
2.
Repeat step 1 using acetone in place of water as the solvent in the second test tube.
3.
Repeat step 2 replacing acetone with cyclohexane in the third test tube.
Hold the test tubes against a white background to compare the solubility of copper sulfate in the three solvents
and record your results. Discard these mixtures into the heavy metals waste container in the fume cupboard.
Once these test tubes have been emptied you…
Chapter 7 Solutions
Connect 1-Semester Online Access for Principles of General, Organic & Biochemistry
Ch. 7.1 - Classify each substance as a heterogeneous...Ch. 7.1 - Classify each product as a solution, colloid, or...Ch. 7.2 - Consider the following diagrams for an aqueous...Ch. 7.2 - Prob. 7.4PCh. 7.2 - Prob. 7.5PCh. 7.2 - Prob. 7.6PCh. 7.2 - Prob. 7.7PCh. 7.2 - If a solution contains 125 mEq of Na+ per liter,...Ch. 7.3 - Prob. 7.9PCh. 7.3 - Prob. 7.10P
Ch. 7.4 - Why does a soft drink become flat faster when it...Ch. 7.4 - Predict the effect each change has on the...Ch. 7.5 - Prob. 7.13PCh. 7.5 - Prob. 7.14PCh. 7.5 - Prob. 7.15PCh. 7.5 - A drink sold in a health food store contains 0.50%...Ch. 7.5 - Prob. 7.17PCh. 7.5 - Prob. 7.18PCh. 7.5 - Prob. 7.19PCh. 7.6 - Prob. 7.20PCh. 7.6 - Prob. 7.21PCh. 7.6 - Prob. 7.22PCh. 7.6 - Prob. 7.23PCh. 7.6 - Prob. 7.24PCh. 7.7 - Prob. 7.25PCh. 7.7 - Prob. 7.26PCh. 7.7 - Prob. 7.27PCh. 7.8 - Which solution in each pair exerts the greater...Ch. 7.8 - Describe the process that occurs when a 1.0 M NaCl...Ch. 7.8 - Prob. 7.30PCh. 7 - Prob. 7.31UKCCh. 7 - Prob. 7.32UKCCh. 7 - Prob. 7.33UKCCh. 7 - Prob. 7.34UKCCh. 7 - Prob. 7.35UKCCh. 7 - Prob. 7.36UKCCh. 7 - Prob. 7.37UKCCh. 7 - Prob. 7.38UKCCh. 7 - Prob. 7.41UKCCh. 7 - Prob. 7.42UKCCh. 7 - Prob. 7.43APCh. 7 - Prob. 7.44APCh. 7 - Prob. 7.45APCh. 7 - Prob. 7.46APCh. 7 - Prob. 7.47APCh. 7 - Prob. 7.48APCh. 7 - Prob. 7.49APCh. 7 - Prob. 7.50APCh. 7 - Prob. 7.51APCh. 7 - Prob. 7.52APCh. 7 - Prob. 7.53APCh. 7 - Prob. 7.54APCh. 7 - Prob. 7.55APCh. 7 - Prob. 7.56APCh. 7 - Prob. 7.57APCh. 7 - Prob. 7.58APCh. 7 - Prob. 7.59APCh. 7 - Prob. 7.60APCh. 7 - Prob. 7.61APCh. 7 - Prob. 7.62APCh. 7 - Prob. 7.63APCh. 7 - Prob. 7.64APCh. 7 - Prob. 7.65APCh. 7 - Prob. 7.66APCh. 7 - Prob. 7.67APCh. 7 - Prob. 7.68APCh. 7 - Prob. 7.69APCh. 7 - Prob. 7.70APCh. 7 - Prob. 7.71APCh. 7 - Prob. 7.72APCh. 7 - Prob. 7.73APCh. 7 - Prob. 7.74APCh. 7 - Prob. 7.75APCh. 7 - Prob. 7.76APCh. 7 - Prob. 7.77APCh. 7 - Prob. 7.78APCh. 7 - Prob. 7.79APCh. 7 - Prob. 7.80APCh. 7 - Prob. 7.81APCh. 7 - Prob. 7.82APCh. 7 - Prob. 7.83APCh. 7 - Prob. 7.84APCh. 7 - Prob. 7.85APCh. 7 - Prob. 7.86APCh. 7 - Prob. 7.87APCh. 7 - Prob. 7.88APCh. 7 - Prob. 7.89APCh. 7 - Prob. 7.90APCh. 7 - If the concentration of glucose in the blood is 90...Ch. 7 - Prob. 7.92APCh. 7 - Prob. 7.93APCh. 7 - Prob. 7.94APCh. 7 - Prob. 7.95APCh. 7 - Prob. 7.96APCh. 7 - Prob. 7.97APCh. 7 - Prob. 7.98APCh. 7 - Prob. 7.99APCh. 7 - Prob. 7.100APCh. 7 - Prob. 7.101APCh. 7 - Prob. 7.102APCh. 7 - Prob. 7.103CPCh. 7 - Prob. 7.104CP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Need help, please.arrow_forwardCalculate the percent mass per volume, % (m/v), of a dextrose solution containing 6.50 g of dextrose in 2.50 x 10^2 mL of solution. Note that mass is not technically the same as weight, but the abbreviation % (w/v) is often used interchangeably with % (m/v). mass/volume %: ? %(m/v)arrow_forward4. A solution is created by dissolving 74g of NaNO3 into enough water to make 3.50L of solution. Calculate the m/v% concentration of NaNo3 in this solution. Use stoichiometry conversion factors and actually put divider lines in between the numbers. The answer should be 2.1% m/V. 5. A 2.00L bottle of mineral water has a concentration of %0.00162 KCl mass/volume. Calculate the mass inmilligrams (mg) of KCl present in the bottle. Use stoichiometry conversion factors and actually put divider lines in between the numbers. The answer should be 32.4mg Please answer 4 and 5.arrow_forward
- An isotonic solution of pilocarpine hydrochloride is being preapred at a 1.5 % w/v concentration. This drug has an e-Value of 0.24. The pharmacist needs to prepare 30 mL of the pilocarpine hydrochloride solution but also make it isotonic. The pharmacist will add enough boric acid to make the solution isotonic when a sufficient quantity of sterile water is added. Boric acid has a 61.83 g/mol molar mass and an e-Value of 0.52.What mass of boric acid, in units of milligrams, is needed to make this 1.5 % pilocarpine hydrochloride solution isotonic?Round the answer to one decimal place.arrow_forwardYou need to analyze an aqueous alcohol solution in the laboratory. You separated 367 mL of this solution and diluted with 40 mL of water. You then get 50 mL of the resulting solution and mixed with 50 mL 30% v/v aqueous alcohol solution. You analyzed the final solution and found out that it's concentration is 40% v/v alcohol. How much alcohol in mL does the initial solution contains?"arrow_forwardPlease don't provide handwritten solutionarrow_forward
- Preparation of a standard solution of copper(II) sulfate pentahydrate 1. Weigh out accurately 9.99 g of copper(II) sulfate pentahydrate (CuSO4·5H2O) by taring using a clean and dry empty 250-ml beaker. 2. Add tap water to the beaker to reach the 50-mL mark on the side of the beaker. 3. Dissolve all the crystals of CuSO4·5H2O in the water using a clean glass rod for stirring. 4. Then using a glass funnel transfer all the blue solution to a 100-mL volumetric flask. Rinse the beaker with about 10 mL of water and transfer the solution to the volumetric flask. Repeat the rinsing of the beaker with another 10 mL of water and transfer the solution to the volumetric flask. This is called quantitative transfer of the solution. 5. Then add enough water to reach the calibration mark of the volumetric flask. (You will need to use a dropper to add the last few drops of water to ensure the meniscus is on the calibration mark). Close the volumetric flask with a stopper and mix the solution well (so…arrow_forward50 mL of stock solution were taken and added to flask. Then 50 mL of Di water were added to the flask. This is solution 1. Then 50mL of solution 1 were taken and added to a flask and 50 mL of Di water were added to the flask. This is solution 2. Then 50mL of solution 2 were taken and added to a flask and 50 mL of Di water were added to the flask. This is solution 3. Then 50mL of solution 3 were taken and added to a flask and 50 mL of Di water were added to the flask. This is solution 4. Find the concetrations of each solution. Information of stock solution - molar mass- 534.3g/mole 0.587g in MilliQarrow_forwardPercentages represent grams/100m1. So a 1% SDS solution has 1 gram of the detergent SDS in 100ml of water. 1.) How many grams of SDS are in 100mls of a 10% SDS solution? 2.) If you have a 10% SDS stock solution, what dilution factor would you use to make a 1% SDS solution?arrow_forward
- 9. An enzyme stock solution is 100 µg/µL. The stock solution is serially diluted 4 times by a dilution factor of 1/50. What is the concentration of each dilution?arrow_forwardCalculate the volume of stock glucose solutions (2.5 % and 15%) that need to be used to prepare 800 mL of glucose solution with a concentration of 13%. In this case % refers to the grams of glucose per 100 mL of water. V1= volume of stock solution with concentration C (2.5%) V2= volume of stock solution with concentration C2 (15 %) You need to determine V, and V2 in mLarrow_forwardAn impure sample of 130 mg of adipic acid was dissolved in 1.0 mL of boiling water. What is the maximum amount of recoverable adipic acid at 0 oC? Solubility of adipic acid at 0 oC is 0.3 g/ 100 mL Group of answer choices 124 mg 3 mg 127 mg 130 mgarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemistry: Matter and Change
Chemistry
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Glencoe/McGraw-Hill School Pub Co
General, Organic, and Biological Chemistry
Chemistry
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:Cengage Learning
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning