Homework Answers
Soaps and detergents are actually salts of fatty acids .So option A and C are cancelled.
Correct answer is option B. Synthetic detergents are magnesium or calcium salts which even work in hard water but soaps are generally sodium salts of fatty acids and don't work in hard water.
Add Answer to:
10. Which explains why synthetic anionic detergents are better emulsifiers than soap; A. They are stronger...
QUESTION 7 Why are detergents more effective than soap in hard water? a. Detergents will precipitate...
QUESTION 7 Why are detergents more effective than soap in hard water? a. Detergents will precipitate under the acidic conditions of hard water b. Soaps will precipitate under the acidic conditions of hard water c. Soaps have a COO-group that does not precipitate with hard water d. Detergents have a SO3- group that does not precipitate with hard water QUESTION 8 What is the purpose of using 1 mL concentrated H2SO4 in the Fisher esterification reaction? a. To remove water...
RM-Q19 Chloroacetic acid, CICH2CO2H, is a stronger acid than acetic acid. Which one of the following...
RM-Q19 Chloroacetic acid, CICH2CO2H, is a stronger acid than acetic acid. Which one of the following best explains this? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a CICH2C02" is more stable than CH3C02" because of the electron-withdrawing Cl. b CICH2CO2 is more soluble in water than CH3CO2" because of the CI. с CICH2CO2 is more stable than CH3CO2" because of an additional resonance form. d CICH2C02" is more stable than...
***Please explain why you chose your answer*** Which of the following is NOT true? a)...
***Please explain why you chose your answer*** Which of the following is NOT true? a) The surface tension of CH3CH2NH3 is higher than that of both CH3CHO and CCl4. b) Water has a higher viscosity at a given temperature than does CH3CH2CH2CH2CH3, and for both substances, the viscosity decreases when the temperature is raised. c) The cohesive forces between water molecules are stronger than the adhesive forces of water molecules to glass, which leads to...
11. Which of the following best explains why the synthetic route shown below would be unsuccessful?...
11. Which of the following best explains why the synthetic route shown below would be unsuccessful? 2) NaNH2 3) (CHs)hCBr A) The alkynide anion is not a strong enough nucleophile to react with 1-bromopropane in step 1 m amide is not a strong enough base to deprotonate the terminal alkyne in step anion formed by reaction with sodium amide will facilitate an E2 (rather C) The alkynide than SN2) reaction with t-butyl bromide. 5oth substtution reactions will occur on the...
Which way do the fatty acid tails of a phospholipid face in a cell membrane?
QUESTION 1Which way do the fatty acid tails of a phospholipid face in a cell membrane?a.toward the inside of the cellb.toward the outside of the cellc.both directionsd.They lay parallel to the direction of the membrane.QUESTION 2A readily available source of energy that cells use to drive reactions is stored in the ___________ bond.a.phosphodiesterb.phosphoanhydridec.hydrogend.peptideQUESTION 3Which of the following occurs by bringing nonpolar surfaces together to exclude water?a.hydrogen bondsb.hydrophobic forcesc.Van der Waals attractionsd.electrostatic attractionsQUESTION 4How many bonds are made by a carbon...
1. Which of the following amino acids has the most hydrophobic side chain? a). E b)....
1. Which of the following amino acids has the most hydrophobic side chain? a). E b). F c). S d). W e). Y 2. Which type of non covalent interaction would you expect to be present between Cl- and H2O? a). Ionic interactions ("salt links") b). Hydrogen bonds c). Van der Waals interactions d). Ion-dipole interactions For the first question, I have F and W both being hydrophobic chains but am unsure why or how to tell which one would...
30. Which of the following definitions is incorrect? in a A. Endemic: A disease that is...
30. Which of the following definitions is incorrect? in a A. Endemic: A disease that is constantly B. Sporadic: A disease that affects a population occasionalby C. Pandemic: A diseases that affects a large number of people in the worid in a short time the world D. Epidemic: A disease that is endemic across ysozyme and the antibiotic penicillin have similar mechanisms of action is that they both damage to the bacterialC. cell membrane A. ribosomes B. capsule D. cell...
Essex County College Division of Biology and Chemistry General Chemistry II Problem Set I CHM 10 1. Which of the following mixtures have components which can be separated by filtration? A) colloi...
Essex County College Division of Biology and Chemistry General Chemistry II Problem Set I CHM 10 1. Which of the following mixtures have components which can be separated by filtration? A) colloids B) solutions D) all of these 2. In most liquid solutions, the component present in the larger amount is called the A) dispersed medium B) emulsifying agent C) solute D) solvent 3. lodine, 12(s), is more soluble in dichloromethane, CHCI than in water because A) both iodine and...
9 Interpret your results: a In which tube(s) did protein digestion occur? How do you know?...
9 Interpret your results: a In which tube(s) did protein digestion occur? How do you know? b In which tube(s) did no protein digestion occur? How do you know? c What effect does pH have on protein digestion with pepsin? Why? d What other effects does acid have in the stomach? Procedure 3 Demonstrate Lipid Emulsification Let's examine what happens during the process of emulsification. In this exercise you will use four substances to observe emulsification in action: 1 Lipids:...
RC 200 Cardiopulmonary Pathology SOAP Assignment #4 Case Study: Tuberculosis Name:___________________________________ Date:___________________________________________ ADMITTING HISTORY A 58-year-old...
RC 200 Cardiopulmonary Pathology SOAP Assignment #4 Case Study: Tuberculosis Name:___________________________________ Date:___________________________________________ ADMITTING HISTORY A 58-year-old Caucasian man was well known and liked by the staff at the Samaritan Shelter for the Homeless. The social workers at the shelter had spent a great deal of time and resources working with the man on a number of areas, including his alcohol addiction. Their records showed that they had not seen him for about 6 months. When they last had seen him,...
QUESTION 7 Why are detergents more effective than soap in hard water? a. Detergents will precipitate under the acidic conditions of hard water b. Soaps will precipitate under the acidic conditions of hard water c. Soaps have a COO-group that does not precipitate with hard water d. Detergents have a SO3- group that does not precipitate with hard water QUESTION 8 What is the purpose of using 1 mL concentrated H2SO4 in the Fisher esterification reaction? a. To remove water...
RM-Q19 Chloroacetic acid, CICH2CO2H, is a stronger acid than acetic acid. Which one of the following best explains this? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a CICH2C02" is more stable than CH3C02" because of the electron-withdrawing Cl. b CICH2CO2 is more soluble in water than CH3CO2" because of the CI. с CICH2CO2 is more stable than CH3CO2" because of an additional resonance form. d CICH2C02" is more stable than...
11. Which of the following best explains why the synthetic route shown below would be unsuccessful? 2) NaNH2 3) (CHs)hCBr A) The alkynide anion is not a strong enough nucleophile to react with 1-bromopropane in step 1 m amide is not a strong enough base to deprotonate the terminal alkyne in step anion formed by reaction with sodium amide will facilitate an E2 (rather C) The alkynide than SN2) reaction with t-butyl bromide. 5oth substtution reactions will occur on the...
30. Which of the following definitions is incorrect? in a A. Endemic: A disease that is constantly B. Sporadic: A disease that affects a population occasionalby C. Pandemic: A diseases that affects a large number of people in the worid in a short time the world D. Epidemic: A disease that is endemic across ysozyme and the antibiotic penicillin have similar mechanisms of action is that they both damage to the bacterialC. cell membrane A. ribosomes B. capsule D. cell...
Essex County College Division of Biology and Chemistry General Chemistry II Problem Set I CHM 10 1. Which of the following mixtures have components which can be separated by filtration? A) colloids B) solutions D) all of these 2. In most liquid solutions, the component present in the larger amount is called the A) dispersed medium B) emulsifying agent C) solute D) solvent 3. lodine, 12(s), is more soluble in dichloromethane, CHCI than in water because A) both iodine and...
9 Interpret your results: a In which tube(s) did protein digestion occur? How do you know? b In which tube(s) did no protein digestion occur? How do you know? c What effect does pH have on protein digestion with pepsin? Why? d What other effects does acid have in the stomach? Procedure 3 Demonstrate Lipid Emulsification Let's examine what happens during the process of emulsification. In this exercise you will use four substances to observe emulsification in action: 1 Lipids:...
Most questions answered within 3 hours.
-
a bottle cap manufacturer with four machines and six operators
wants to see if variation in...
asked 31 minutes ago -
State Farm Insurance studies show that in Colorado, 55% of the
auto insurance claims submitted for...
asked 1 hour ago -
Complete the following reactions which form ethers (A
and B) and cyclic ethers (C-E) as major...
asked 1 hour ago -
in a perfectly elastic collision what is the velocity of ball A
if the original direction...
asked 2 hours ago -
PLEASE ANSWER ALL
1) The pressure of the atmosphere decreases with increasing
altitude in the
Choose...
asked 2 hours ago -
A simple random sample of 25,000 individuals are surveyed in
order to determine the prevalence of...
asked 2 hours ago -
People who do very detailed work close up, such as jewelers,
often can see objects clearly...
asked 2 hours ago -
14 years ago, Blue Lake Corp. issued 30 year to maturity
zero-coupon bonds with a par...
asked 2 hours ago -
Warnerwoods Company uses a perpetual inventory system. It
entered into the following purchases and sales transactions...
asked 2 hours ago -
Equivalent Units of Conversion Costs
The Rolling Department of Oak Ridge Steel Company had 6,842 tons...
asked 2 hours ago -
what does the concept of "core competence" mean? why
is this concept important? How would you...
asked 2 hours ago -
__________ is a type of visualization that is linked to strategy
and used within a formal...
asked 2 hours ago