Homework Answers
SOLN 1
Centrifugation : Centrifugation is a technique which is mainly used for the separation of substances from a given solution based on their size, density, shape and relative viscosity etc and also on the speed of the rotor. on moving with substantial speed, The particles are then suspended in a medium and then it is placed in a centrifuge tube.
It is based on the application of of centrifugal force and used to separate two miscible substances
decantation : Decantation is basically a process by which we seperate mixtures of immiscible liquids or it can also be liquid and a solid mixture like suspension. It is based on the difference in density of two immiscible liquids
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1. Briefly explain the meaning of the following terms in the context of this laboratory exercise. centrifugation- d...
2. What is the purpose of checking for completeness of precipitation? Briefly explain how this is...
2. What is the purpose of checking for completeness of precipitation? Briefly explain how this is done.
Briefly explain the meaning of the following terms: (i) primary photochemical process (ii) quantum yield (iii)...
Briefly explain the meaning of the following terms: (i) primary photochemical process (ii) quantum yield (iii) Stark-Einstein law (iv) active medium (v) optical feedback
questions 2-4(1,2) Pre-Laboratory Assignment 1. Briefly describe the hazards associated with the Ca2+ ion-precipitating buffer solution...
questions 2-4(1,2)
Pre-Laboratory Assignment 1. Briefly describe the hazards associated with the Ca2+ ion-precipitating buffer solution you will use in this experiment (in Part I). enim o larak 2. Briefly explain what is meant by the statement, "Ca2+ ion is quantitatively removed from solution by precipitation with C20.-ion." 3. Briefly distinguish between the terms temporary water hardness and permanent water hardness as they pertain to this experiment.pato 4. Suppose that a liter of sample water contains 1.00 mmol of Ca2+...
name 1. Briefly doscribe Pre-Laboratory Assignment 3. Write the chemical equation(s) for each part the experimet,...
name 1. Briefly doscribe Pre-Laboratory Assignment 3. Write the chemical equation(s) for each part the experimet, as outlined in Equation 1 the (a) why you must carry out the oxidation of Cu oxidation of Cu b) Part ! (b) why you should be particularly careful when you work with 3M H2SO4 solution. 2. Briefly explain the meaning of each of the tol lowing terms as it relates to this experiment. (a) decant (b) filtrate (c) supernatant liquid
please answer all questions! I. Briefly explain what is meant by each of the following terms...
please answer all
questions!
I. Briefly explain what is meant by each of the following terms as it relates to this experiment. (a) Precipitation reaction (b) Spectator ion (c) The designation (ag) following the formula of a compound (d) Decomposition reaction (e) Coefficients II. (a) Write the complete ionic equation for the double displacement reaction that occurs when aqueous solutions of barium nitrate Ba(NO3)2 and sodium chromate Na2Cr04 are mixed. (b) Name the spectator ions in this chemical reaction. (c)...
EXERCISE SC Beware the Euphemism is a list of paired terms or phrases. For each, briefly...
EXERCISE SC Beware the Euphemism is a list of paired terms or phrases. For each, briefly explain how the euphe- dulls or deflects the meaning of the term, and discuss why you think such eu- mism phemistic language replaced the original term. EUPHEMISM 1. offshore 2. revenue enhancement 3. tax relief 4. collateral damage 5. "somatic cell nuclear transfer"cloning 6. friendly fire 7. laugh lines I TERM / foreign taxes /tax cuts / civilian losses /shot by a fellow soldier...
3. What is the purpose of washing a precipitate? Briefly explain how this is done. 4....
3. What is the purpose of washing a precipitate? Briefly explain how this is done. 4. In addition to the step-by-step instructions, the flow chart found on the previous page in quite useful in keeping track of the cations during the experiment. Sketch the flow chart so that the scheme is familiar before beginning the exercise.
Q.1 Explain the meaning of the two additional terms in the van der Waals equation compared...
Q.1 Explain the meaning of the two additional terms in the van der Waals equation compared to the Ideal Gas equation. Explain how one of the terms is related to the Lennard-Jones potential.
w NAME: INSTRUCTOR: SECTION/GROUP: PRE-LABORATORY QUESTIONS CHEMICAL REACTIONS annnnnnnnnn 1. Define the following terms: a. Precipitation...
w NAME: INSTRUCTOR: SECTION/GROUP: PRE-LABORATORY QUESTIONS CHEMICAL REACTIONS annnnnnnnnn 1. Define the following terms: a. Precipitation reaction b. Acid C. Base d. Solubility 2. Predict whether the following substances are soluble or insoluble in water based on the solubility rules in Table 4.1. Substance Soluble or insoluble? NaNO, NH,Br (NH) SO (NHẠCO, BaBr, Baso. Ba(OH), Baco, Laboratory 4 Chemical Reactions
LABORATORY 9 Lab Report: Respiratory System: Physiology 1. Purpose of this exercise: Procedure 1. View histological...
LABORATORY 9 Lab Report: Respiratory System: Physiology 1. Purpose of this exercise: Procedure 1. View histological slides pertaining to the respiratory system. 2. View torso and Respiratory models and diagrams. Questions 1. State the role carbon dioxide plays in maintaining a consistent blood pH. 2. There are two pairs of vocal folds. Which pair are the true vocal cords (superior/inferior)? Explain how the vocal cords produce speech? 3. State the function of the following structures nasal mucosa glottis cardiac notch...
2. What is the purpose of checking for completeness of precipitation? Briefly explain how this is done.
questions 2-4(1,2)
Pre-Laboratory Assignment 1. Briefly describe the hazards associated with the Ca2+ ion-precipitating buffer solution you will use in this experiment (in Part I). enim o larak 2. Briefly explain what is meant by the statement, "Ca2+ ion is quantitatively removed from solution by precipitation with C20.-ion." 3. Briefly distinguish between the terms temporary water hardness and permanent water hardness as they pertain to this experiment.pato 4. Suppose that a liter of sample water contains 1.00 mmol of Ca2+...
name 1. Briefly doscribe Pre-Laboratory Assignment 3. Write the chemical equation(s) for each part the experimet, as outlined in Equation 1 the (a) why you must carry out the oxidation of Cu oxidation of Cu b) Part ! (b) why you should be particularly careful when you work with 3M H2SO4 solution. 2. Briefly explain the meaning of each of the tol lowing terms as it relates to this experiment. (a) decant (b) filtrate (c) supernatant liquid
please answer all
questions!
I. Briefly explain what is meant by each of the following terms as it relates to this experiment. (a) Precipitation reaction (b) Spectator ion (c) The designation (ag) following the formula of a compound (d) Decomposition reaction (e) Coefficients II. (a) Write the complete ionic equation for the double displacement reaction that occurs when aqueous solutions of barium nitrate Ba(NO3)2 and sodium chromate Na2Cr04 are mixed. (b) Name the spectator ions in this chemical reaction. (c)...
EXERCISE SC Beware the Euphemism is a list of paired terms or phrases. For each, briefly explain how the euphe- dulls or deflects the meaning of the term, and discuss why you think such eu- mism phemistic language replaced the original term. EUPHEMISM 1. offshore 2. revenue enhancement 3. tax relief 4. collateral damage 5. "somatic cell nuclear transfer"cloning 6. friendly fire 7. laugh lines I TERM / foreign taxes /tax cuts / civilian losses /shot by a fellow soldier...
3. What is the purpose of washing a precipitate? Briefly explain how this is done. 4. In addition to the step-by-step instructions, the flow chart found on the previous page in quite useful in keeping track of the cations during the experiment. Sketch the flow chart so that the scheme is familiar before beginning the exercise.
w NAME: INSTRUCTOR: SECTION/GROUP: PRE-LABORATORY QUESTIONS CHEMICAL REACTIONS annnnnnnnnn 1. Define the following terms: a. Precipitation reaction b. Acid C. Base d. Solubility 2. Predict whether the following substances are soluble or insoluble in water based on the solubility rules in Table 4.1. Substance Soluble or insoluble? NaNO, NH,Br (NH) SO (NHẠCO, BaBr, Baso. Ba(OH), Baco, Laboratory 4 Chemical Reactions
LABORATORY 9 Lab Report: Respiratory System: Physiology 1. Purpose of this exercise: Procedure 1. View histological slides pertaining to the respiratory system. 2. View torso and Respiratory models and diagrams. Questions 1. State the role carbon dioxide plays in maintaining a consistent blood pH. 2. There are two pairs of vocal folds. Which pair are the true vocal cords (superior/inferior)? Explain how the vocal cords produce speech? 3. State the function of the following structures nasal mucosa glottis cardiac notch...
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