Lab Data - X Is this the correct change in pH? Hint: the change in pH can be negative. TUBE TUBE TUBE 1 2 3 HCI Tube 1 Tube 2 Tube 3 Cytosol (рH) (drops) Water (pH) Buffer (pH) 7 9 7 9. 7 3 2 7 2 9 7 Change in pH = Final pH - Initial pH
Q: Topic - electrolytes
A: Electrolytes are minerals in your body that have an electric charge. They are in your blood, urine,…
Q: Interpreting data in terms of environment and nature of the water involved. How does the “dirty…
A: Monitoring the water qualities activities include the measurement of physical parameters and…
Q: TEST TUBE TEMPERATURE 5 °C 37 °C 70 °C Minutes A Blue Blue Blue O min Blue Blue Blue 3 mins C Blue…
A: 1. From the data given AS THE TIME INCREASES STARCH DIGESTION IS MAXIMUM (colour changes from blue…
Q: My question is: Could you explain steps? (etc. why do we heat or add chemicals like nacl or ammonium…
A: Casein is the major protein component found in milk. It is generally a phosphoprotein which is…
Q: If a solution containg 0.4 M NaCl is separated by smipermeable membrane. To Caculate the minimum…
A: Osmotic pressure is the minimum pressure that needs to be applied to a solution to prevent the…
Q: Using the TABLE shown, identify which proteins would elute together in a gel filtration experiment.…
A: Chromatography is a laboratory technique used for the separation of solutes from the sample mixture.…
Q: tube 1: 5ml milk, 10 drops phenol red, 5 ml distilled water tube 2: 5ml milk, 10 drops phenol red,…
A: Water is the basic need of any enzyme to work properly and to maintain its confirmation. The given…
Q: 1. What happened to the weight of the dialysis tubing in Beaker 1 (0% NaCl)? dach 2. What happened…
A: Osmosis is the movement of solvent molecules from a region of high concentration to a region of low…
Q: DATA AND RESULT: I. Solubility Test (Record the color and appearance of each test solution.) Coconut…
A: Lipids: The lipid compounds include fats, oils, steroids, waxes, fat-soluble vitamins,…
Q: 26-UDer elution mobile phase stationary phase distribution constant (c) retention time (f) retention…
A: a)Elution : The process of separation of one material from another by a solvent is known as elution.…
Q: QUESTION 3 How many mL of a 0.1% solution can be prepared from 600 mL of a 0.3% solution? 180 mL…
A: If the solution prepared from 600 ml of a 0.3% solution Then for 0.1 % solution, It would take 200…
Q: Compute for the lactic acid content of these samples given the values below. Show your solution…
A: The amount of substance present in the mixture of substances can be defined in terms of…
Q: Please answer questions 3 a, b, and c. thank you
A: a) Molarity of a solution is the measure of its concentration and is expressed in moles of solute in…
Q: Change in Length 9 Students cut 20 rod-shaped pieces of potato of the same diameter and length. Five…
A: The above given graph shows the dissolved oxygen content, sewage water content and fish population…
Q: Question: What is the most effective buffer against bases? 6. Determination of buffer capacty Buffer…
A: Buffers are generally good over the range pH=pKa ± 1. The ammonia buffer would be effective…
Q: A buffer system ....
A: Homeostasis is the state of steady inside, physical, and manufactured conditions kept up by living…
Q: DATA TABLE L6108.3 nm Lamda max Trial Concentration (mol/L) Absorbance 0.428 0. 8०० 1.17 1.498 1.845…
A: Spectroscopy is the interaction between electromagnetic radiation and matter. If transmittance T…
Q: why cant human live without water?
A: Around 60 percent of our body is made up of water and we can only live three to five days without…
Q: Does the H+ concentration increase or decrease when the pH drops from 5 to 4?
A: The pH is the power of Hydrogen and is used as a measure of the acidic or basic character of a…
Q: please answer 3 b and c. i need a detailed explanation about each molecule including the water.…
A: Diffusion is defined as movement of molecules from an area of high concentration to the area of low…
Q: Dialysis bag in beaker Cell in beaker 2M Na+ 2M Na+ 2M CI- 2M glucose 2M starch 2M CI- 2M glucose 2M…
A: a) At the beginning the osmotic concentration of dialysis bag is (2+2+2+2)=8M. And the osmotic…
Q: 14 strength Pulmocare 450mL q8h followed by 100mL of water after each feed. Calculate the mixture,…
A: Given, that 1/4 strength pulmocare 450 mL q8h has to be given followed by 100 mL water after every…
Q: The dilution factor for Sample 1 if 20 µL of extract is added to 980 µL distilled water is 50. What…
A: Given Values: Dilution factor for sample 1 = Total Volume of the diluted sampleVolume of the…
Q: 18 Students were provided with cubes of slightly alkaline gelatine of different dimensions,…
A: From the above data we have to explain a For each block, calculate the ratio of surface area to…
Q: ACTIVITY: DIFFUSION Procedures: 1. Fill one glass cup with hot water. Fill the second glass with…
A: Passive movement of molecules from the high concentration towards the low concentration without a…
Q: Questions to Answer: 1. What is a buffer solution? And what are its composition?
A: An acid may be defined as a substance which, when dissolved in water, produces hydrogen ions [H+] or…
Q: Tables E & F. Hopkins-Cole and Bromine Water Reaction Samples TESTS Hopkin's Cole Bromine Water 1.…
A: Hopkins' cole test The test is specific for the amino acid that contains the indole group present…
Q: Jlans 29 Name Date Section REVIEW Check Your Recall a neutral solution has a pH Fill in the blanks:…
A: Hello there! As you have posted multiple questions and not specified which question needs to be…
Q: 1. Water loss, 2. UV radiation, 3. Moving water.
A: Plants evolved through the gradual evolution of physical structures and reproductive processes…
Q: Need help with these two questions
A: 1) a. HA(aq) +OH-(aq) -> A- + H2O b. At the equivalence point there is an acid present in…
Q: Save water
A: Life evolved in water. The major cellular component of organisms is water. It is needed for all…
Q: 6. GENERALIZATION Direction Arrange the procedure given below in order in preparing a solution. Use…
A: In analytical chemistry, a standard solution is a solution containing a precisely known…
Q: Prolamins are proteins soluble in water and dilute aqueous solutions
A: With respect to the solubility of a protein in water the globular proteins are more soluble than…
Q: 10% NaCl solution presents a more environment than a 5% NaCl solution. isotonic O hypotonic…
A: The solution is considered to be hypertonic if a cell with a NaCl concentration of 0.9 percent is…
Q: 1) Dilution fraction 2) Water
A: Dilution is a method to dilute the specific sample to achieve the required low concentration of the…
Q: moll' What is the pH of this solution? What is the pH of 35 ml buffer solution which is 0,3 M in…
A: Given Values: Volume of the buffer = 35 ml Concentration of acetic acid = 0.3 M Concentration of…
Q: First Quarter Summative Assessment Module 4 Solutions Name: GONZALES, ELMINA L. Grade & Section:…
A: Biochemistry is the science of study of the internal biochemical processes of organisms. The…
Q: Water cohesion is due to the water creating H-bonds with other molecules. True False
A: Introduction: The condition of adhering or staying together of the same substances alluded to as…
Q: Name UNIT 3 Section Date REVIEW I Compare and contrast an acid and a base, and provide examples of…
A: INTRODUCTION The answers of question number 1 to 6 is given below.
Q: Experiment 1: Complete the table and use it in your report Table #: No. Test tube content Average…
A: Given, are the four tables which determine the average height of a bubble layer from the contents of…
Q: New December 18, 2020. The nitrite in a series of standard solutions (mg/L, n = 5) are converted to…
A: Absorbance is the fraction of intensity of light that is absorbed by a material . According to…
Q: Membrane Separation Experiment (Home Experiment) Using plastic mineral water bottle, rubber band,…
A: Given: Using plastic mineral water bottle, rubber band, three different types of fabrics, mud water…
Q: When a SBIA021 student measured the pH of 1.0M HCI, the student obtained a pH meter and failed to…
A: Either separate reference and pH electrodes or a single combination electrode are used in pH metres.…
Q: Questions: Explain how these properties of water are related to the phenomena described in parts A-H…
A: Water is the very unique molecule because of its properties. it is made up of two hydrogen and one…
Q: How to find final volume? what is the osmolarity and tonicity (hyper,iso,hypo) Tonicity Worksheet…
A: The solution with the lower solute concentration is hypotonic and in this solution the water will…
Q: Diluted solutions Solution 1 Solution 2 Solution 3 Volume stock solution (mL) 4.00 4.00 4.00 Volume…
A: Molarity is a unit of concentration and is defined by the number of moles of a substance in a liter…
Q: ctivity 3 Reset H Osmotic Pressure Filtration Temperature Extremes Radiation…
A: Step 1 Hello. Since you have asked multiple questions, we will solve the first question for you. If…
Q: 2. Imagine you have mixed the following known concentrations of a solution. You then measured their…
A: A standard curve or a calibration curve is a graph plotted against absorbance of known concentration…
Q: Blood is an alkaline buffer having pH around 7.4. If blood would not be a buffer, we may not…
A: Homeostasis is a tendency to maintain the stability of physical and chemical parameters that enable…
Q: What is pH? Represents the concentration of hydrogen ions (H+) in a solution Ranges from o – 14…
A: What is pH ? pH is a way to measure the strengths of acids and bases. In a lab, we might use a pH…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Hd 12 10 8 CO 6 st 4 2 0 0 0.5 not text. only, no text. only, no text. 1 1.5 NaOH Equivalents 2 2.5 You create this titration curve of an amino acid. How many buffering zones are there? Enter a number, no letters. 3 A What is the pka1 of this amino acid? Enter only digits What is the pka2 of this amino acid? Digits A A/ What is the pl of this amino acid? Digits A/-2 What mass of D. A chemistry graduate student is given 450. mL of a 0.60M chlorous acid (HC1O,) solution. Chlorous acid is a weak acid with K =1.1 × 10 KC1O, should the student dissolve in the HCIO, solution to turn it into a buffer with pH =1.80? You may assume that the volume of the solution doesn't change when the KCIO, is dissolved in it. Be sure your answer has a unit symbol, and round it to 2 significant digits. K10On your curve, deaignate the buffer regions, pKas, and the amino acids pI.Show your all work
- ARAN2O H,0+ COH2 CO3E Hcot : PH- Air H,O Lab Time: 1:30 Pm 1. Knowing that these 2 molecules are always floating in the air, hypothesize why your distilled water ( which indeed was pure when put in the container and therefore should have been pH 7), instead had a pH between 5 and 6 (i.e. acidic, not neutral). 2. Hypothesize why the addition of sucrose did not change the pH of distilled water (a big hint to the answer is in the lab section on Acids & Bases).Assignment Score: 74.6% Resources O Hint Check Answer < Question 17 of 28 Each value represents a different aqueous solution at 25 °C. Classify each solution as acidic, basic, or neutral. Acidic Basic Neutral Answer Bank H|= 1.0 x 10-7 РОН 3 7.00 pH = 8,39 OH= 9.0 x 1o POH = 5.34 POH = 10.32 H = 5.0 x 10 [H- 3.5 x 10-D pH= 5.50 OH = 8.9 x 10Practical work. Work 1. Water spaces of the organism. Intracellular water space Extracellular 40% water space 20% Water in the human body is about 60% of body weight and is distributed in two main water spaces: intracellular (40%) and extracellular (20%). Water of the extracellular water space is in the composition of blood plasma, intercellular fluid, lymph and a small amount in the composition of transcellular fluids - cerebrospinal fluid, aqueous humor of the eye, joint fluid, etc. The fluids of these spaces have (despite 1 the different composition of electrolytes and other substances) the same osmotic pressure (they are isoosmic). The osmotic concentration of blood plasma lies in the range from 285 to 310 mosmol/l. H,O When violations of water-salt balance, for example, intake of an excess amount of water or osmotically active substances into the body occurs, water is redistributed along the osmotic gradient between the H,O Nat fluids of the internal environment of the body and…
- Good day, Can you please help me with the below multiple choice question. Your assistance will be highly appreciated. QUESTION Buffers have all of the following characteristics EXCEPT:a. they have relatively flat titration curves at the pH(s) where theybuffer.b. they resist changes in their pH as acid or base is added.c. they are typically composed of a weak acid and its conjugate base.d. they buffer best for polyprotic acids half-way between the two pKavalues.e. buffer where the amounts of conjugate base are nearly equivalentto the amounts of weak acid.Table 4- Determination of the optimum pH of catechol oxidase enzyme Potato extract (mL) Tube # 2d 3d 4d 5d 6d 7d dH₂O (mL) 0 0 0 0 0 0 Catechol (mL) 6 6 6 6 6 6 pH buffer added 4mL pH 2 4mL pH 4 4mL pH 6 4mL pH 7 4mL pH 8 4mL pH 10 1 1 1 1 1 1 Absorbance (0 mins) A: 0.010 Start Time: 3:24 A: 0.008 Start Time: 3:34 A: 0.023 Start Time: 3:36 A: -0.006 Start Time: 3:36 0.018 A: Start Time: 3:36 A: 0.011 Start Time: 3:36 Absorbance (after 10 mins in 40°C water bath) -0.030 A: Take reading at: 3:44 A: 0.154 Take reading at: 3:46 A: 0-105 Take reading at: 3:46 A: 0-132 Take reading at: 3:46 A: 0.074 Take reading at: 3:46 A: 0.018 Take reading at: 3!46 Q15) What is the enzyme's optimum pH(s)? Answer: Q16) Use the difference between 2nd and 1st absorbance to support your conclusion for the optimum pH. Subtract Omin from 10min absorbance -0.04 0.0012 0.082 0.138 0.056 0.007Jlans 29 Name Date Section REVIEW Check Your Recall a neutral solution has a pH Fill in the blanks: An acidic solution has a pH value of value of , and a basic (alkaline) solution has a pH value of and its pH will 2 Adding hydrogen ions to a solution will make the solution more a. acidic; increase b. basic; increase C. acidic; decrease d. basic; decrease 3 What does a buffer do when hydrogen ions are added to a solution? a. The buffer keeps the pH of a solution neutral. b. The buffer releases base ions. C. The buffer releases additional hydrogen ions. d. The buffer binds the hydrogen ions to remove them from the solution. 4 Which of the following statements about chemical reactions is false? a. The rate of a chemical reaction increases when temperature decreases. b. A chemical reaction occurs when chemical bonds are formed, broken, or rearranged. c. A chemical reaction occurs when electrons are transferred between molecules. d. All of the above are true. 5 How does an enzyme affect the…
- HELLO) there was a question that 31. Choose false answer about proteinsA. there are anionB. they are cationC. they present in ECF mainly in plasmaD. they are present with low concentration in interstitial fluidE. concentration of protein inside cells is more than the outside of the cells i dont understand in cites there is written that prteins can be anions and cations then why this tests answers shows that answer is b thankfor your attetion ;sorry to bother youThe acid -base titration curve shown most likely resulted from 12 10- 8- 4 2 20 40 60 80 Volume of NaOH (mL) strong acid -strong base weak acid- weak base polyprotic acid-strong base weak acid- strong base Hd 6. Hdi need answers for this questions? thank you the book i am using :Human Anatomy and physiology second edition' by catharine C.whiting Be able to explain the results of the water & penny experiment (Activity 1) in terms of surface tension, hydrogen bonding, & surfactant Be able to identify the following substances as acidic, basic, or neutral: distilled water, tap water, black coffee, lemon juice, household bleach, egg white (albumin)