Q: As pH decreases, a solution becomes more acidic.
A: The estimation of the concentration of “hydrogen ions” in the solution is known as the potential of…
Q: How much of the enzyme proteinase k (solute) is required to make 250ml of a solution with a…
A: A protease (also called a peptidase or proteinase) is an enzyme that catalyzes proteolysis.…
Q: volumetric flask is made to prepare a certain chemical concentration through dilution for example if…
A: Asked : There is no volumetric flasks prepare 0.2N of acetic acid from 1 N acetic acid stock…
Q: Ionic interactions are weaker in water than they are in an anhydrous medium. Describe how water…
A: Ionic interaction: It is basically the attraction and bonding of two charged molecules, this is…
Q: Define the term Tonicity of Solutions?
A: Any solution has 2 components – solute and solvent. Solute is substance which gets dissolved and…
Q: Which of the following is an example of a buffer and why? Select one: O a. none of them are examples…
A: Before leading to the solution lets first understand the meaning of buffer solution. The buffer…
Q: The normal range of the sodium electrolyte in the body is 134 to 145 mEq/L. The term mEq is…
A: Electrolytes are minerals that can yield ions when dissolved in water. They are essential for…
Q: Water acts as a very effective solvent. True or false
A: True
Q: Given a stock protein solution with a concentration of 3 mg/ml, determine the protein concentration…
A: Stock solutions are used in many laboratory procedures, in order to save space for keeping larger…
Q: Calculate the mass percent of this solution
A: 16.7 grams in 645 ml solution Density of solution : 1.09 g/ml
Q: pH with 0 mL of pH with 5 mL of pH with 10 mL of Cola pH with 20 mL of Cola Buffer Cola Cola Buffer…
A: A good buffering system is one that do not allow the tremendous changes in the pH of the solution.…
Q: Which of the following represents a Buffer solution?
A: Buffer solution can be defined as the solution which resists changes in pH when acid or alkali is…
Q: The most important ion in biological systems is the____________________ ion.
A: Several metal ions are important for the biological activity of the animals as well as of the…
Q: Please show how the solution of the concentration (the highlighted color) of the unknown solution
A: As concentration increases the absorbance is also increasing. 50 ppm concentration Absorbance is…
Q: When mixing 40 mg of a medication in 100 ml total solution, the resulting strength is
A: A pharmaceutical medicine is a chemical substance that causes a biological or physiological effect…
Q: You have 200 mL of a 1.5 M glucose solution. How many moles of glucose are there?
A: Introduction: Glucose is a monosaccharide and a major source of energy for the living body. The…
Q: A difference in chemical concentration between one point and another is called a concentration…
A: When concentration of particles is higher in one side of the cell membrane and the other side of…
Q: Why are buffers important in living systems? please explain
A: A buffer is a solution that can withstand pH changes when acidic or basic substances are added to…
Q: If water were not polar, would it dissolve sodium chloride
A: Water is a polar particle that can break up numerous salts into their ionic structures. It is…
Q: The ability of a solution to resist pH changes is called its____________________.
A: The solutions which resist pH changes in a specific range are known as buffers. If small amount of…
Q: How many grams are in 1 mL for the following solution? NS _________ this is the whole question
A: NS or Normal saline: It is nothing but a mixture of sodium chloride (NaCl) and water that is…
Q: A dehydration reaction (or condensation reaction) is the process in which _____.
A: Dehydration is a type of a chemical reaction that takes place generally during anabolic reactions.…
Q: Why does buffers is significant inside a human body?
A: A buffer system is a solution that resists a change in pH when acids or bases are added to it.…
Q: In your own words, what is a buffer solution and how does it work? *
A: The pH scale is used to detect whether an aqueous solution is acidic or basic. Acidic solutions have…
Q: A small amount of NaOH is added to a weak acid buffer system. Describe what happens in terms of…
A: Buffer is considered as the solution, which is a mixture of the weak acid and its conjugate base.…
Q: A 196 g saturated solution has a solubility of 96.0 g/100 g water. If somebody sneakily sip 6 g of…
A: Solubility represents the maximum amount of a substance that dissolves in a given amount of solvent…
Q: The chemical reaction where an aldehyde or ketone reacts with an alcohol in the presence of an…
A: Functional groups are the chemical entities which provide specific characteristic for reactions to…
Q: Which of the following ionizes completely in solution and is considered to be a strong acid? Select…
A: Acid Acid are those compounds which give hydrogen ion when dissolved in water.
Q: A solution of Na2CO3 contains 53g of solute in 200ml of solution. What is the molarity of this…
A: The concentration of a solution can be expressed in terms of molarity. Molar mass is defined as the…
Q: In biological systems, buffers are important because they facilitate changes in pH to enhance…
A: A biological buffer is an organic material which acts as a H+ ions neutralizer. A biological buffer…
Q: Two solutions with equal osmotic pressures are
A: Osmosis is the process of diffusion of solvent from the region of higher concentration of solute to…
Q: A buffer is composed of a weak acid and its _____________ base
A: Buffer is a solution containing an acid and a base, or a salt, that tends to maintain a constant…
Q: If a liquid contains 3 mg of drug in 40 mL, what is the milligram percent of this solution? Round to…
A: Drug calculation is an essential component of drug administration. As Nurses we need to understand…
Q: Is lysine a suitable buffer at acidic, neutral, or basic pH range and why? What are the functions of…
A: Amino acids are the polymers that synthesize the proteins by joining together with the covalent…
Q: When some of the sugar added to iced tea remains undissolved on the bottom of the glass, the…
A:
Q: When the concentration of H+ ions in a solution decreases, a buffer maintains the pH of a solution…
A: Introduction: A buffer is a weak acid or base that prevents sudden changes in the pH of the…
Q: Another characteristic of modern buffers such as HEPES is that their pH changes little with changes…
A: Base and acid both interact with each other and form salt and water. They both are used in everyday…
Q: A solution with 0.4M sucrose will have a higher water potential than a solution with 0.5M sucrose.
A: Water potential is a measure of availability of free amount of water or potential energy of water in…
Q: If the addition of an acid or a base to a solution does not change its pH (or changed minimally),…
A: The question asks to fill up the statement:If the addition of an acid or a base to a solution does…
Q: True or False: Solid water is more dense than Liquid water.
A: Solid water is less dense than liquid water because, when liquid water molecule freeze into solid…
Q: When two drops of NaOH were added to the water the color changed from purple to green. Did this make…
A: A pH measurement scale is used to specify the acidity or basicity of a solution. pH refers to the…
Q: The pH of a solution containing 20 mL of 0.120 N NaOH and 35 mL of 0.120 N NaOH is 1.49. True or…
A: Given Values: 20 ml of 0.12 M NaOH and 35 ml of 0.12 M NaOH are mixed together. The pH of the mixed…
Q: Beer’s law is strictly obeyed only in dilute solutions. Why?
A: It is frequently expected that Beer's Law is consistently a direct plot portraying the connection…
Q: Which of the following statements about pH is (are) true: pH is a measure of free hydrogen ion…
A: PH is measure of hydrogen ion concentration.On Ph scale, Ph from 1-6 indicates acidic ph and from 8…
Q: How much of a 5x buffer and how much water should be added to make 1 L of a 1x solution
A: For application, it's normally diluted to a "1X" concentration. A 5X concentrated solution, for…
Q: Buffers have all of the following characteristics EXCEPT: a. they have relatively flat titration…
A: An aqueous solution comprising of a mixture of a weak acid and its conjugate base or a weak base and…
Step by step
Solved in 3 steps
- With solution pleaseGive the solution ASAP.A researcher prepares 100 mL of aqueous solution containing 0.1 g of a protein. The researcher then uses an experimental apparatus ,where he notes that, at room temperature (300K) and atmospheric pressure (101.325 kPa), distilled water flows naturally into the solution compartment. However, when he applies an extra pressure of 1000 Pa he observes that the flow of distilled water ceases and the system is in balance. Calculate the molar mass of this protein, in kDa (1 Da = 1 g/ mol); Why does the flow of distilled water cease with the application of the pressure of 1000 Pa? Explain in terms of potential chemicals. %3D
- The simple form of |Hoff equation is: II = [B]RT In this equation the [B] is the molar concentration of solute. So: n m [B] = v MV = cg /MA Where c, the mass concentration of the solute is in the total volume of solution and M, is the molar mass of the solute. This equation can be replaced in the previous one to get: RT II = MA In this equation molar mass of given solute can be detemined from the slope of the II vs Cz plot. This equation applies only to solutions that are sufficiently dilute to behave as ideal-dilute solutions. In the case of non-ideal solutions, however, the extended formula is: II = [B]RT{1+ k. [B] + n. [B]² + ...} Biological macromolecules dissolve to produce solutions that are far from ideal, but we can still calculate the osmotic pressure by assuming that the van't Hoff equation is only the first term of a lengthier expression: II [B]RT(1+ b. [B]) II = RT + bRT. [B] [B] II = RT + bRT./M. */Ma п RT ÞRT Ca MA MA In this equation molar mass of given biomolecule can…Solutions with a lower concentration of solutes than the concentration inside the cell are hypotonic. True FalseHow much active ingredient in 20 cc of a 15% solution? You have 1:1000 concentration of epinephrine. How many mLs do you need to draw up if you want to give 45 mg of the drug? (I need help please :)