What is the aw of pure water? What is the lower limit of awfor life?

Q: Given .750L of a 12M HCI solution, what volume of 5.00M HCI could you make?

A: Dilution formula is N1V1 = N2V2. N1 = normality before dilution. V1 = volume of the solution before…

Q: What is the formula for water vapor

A: Water can be in three possible stetes in the free environment i.e. solid, liquid and gas. Water…

Q: Why does pure water have maximum water potential?

A: The energy required to transfer an infinitesimal quantity of water from a sample to a reference pool…

Q: Why is it necessary to specify the temperaturewhen making a table listing ∆G values?

A: ∆G is defined the change of Gibbs (free) energy for a system; ∆G° is the Gibbs energy change for a…

Q: What is the molarity of a 30% solution of NaCI

A: Let us first define the percentage solution : 30% NaCl solution= 30% w/v solution = 30g/100 ml.Since…

Q: what are the reasons for water’s polarity and the effect of polarity?

A: Polar molecules are those where there is a difference in electronegativity between the bonded atoms…

Q: Many of the buffers used these days, such asHEPES and PIPES, were developed because they have…

A: A buffer is a solution that prevents the pH of a sample from decreasing or increasing when acids or…

Q: What happened when a potato strip placed in distilled water?

A: Osmosis is the movement of of water from area of high concentration to area of low concentration…

Q: Why is water important for metabolism?

A: Metabolism is a process that happens in our body to convert what we eat(food) and drink into energy…

Q: What is the function of the flame in AAS? O lonozation of sample O Atomization of sample O boling of…

A: Guystav Kirchoff and Robert Bunsen first used atomic absorption spectroscopy in 1859 for identifying…

Q: If an aqueous solution has a hydroxyl ion concentration of 1 x 10-6 M, what is the concentration of…

A: Water dissociates into hydrogen ions and hydroxyl ions and at neutral pH (pH =7) the numbers of…

Q: What arew chemical reactions? Explain with an example?

A: Have you ever wonder how is the color of silver changes, how is the iron rod turns brown, or how is…

Q: The most important peculiarity of water when compared to other solvents is that water has إختر أحد…

A: Water is a polar molecule  and it is called the universal solvent

Q: What is the pH of a solution that has an H¯ concentration of 1.75 x 10° mol/L

A: pH is the measure of the acidity or basicity of a medium.  It is measured as the negative logarithm…

Q: How is oxygen dissolved in water?

A: Water is polar molecule and oxygen is non polar molecules in which electron density is normally…

Q: +2, and 4.03. the following 0.10 M solutions available: CH3COOH, NACH:C00, NHẠCI, NH3, NAHCO:, and…

A: A buffer is a solution that resists the change in the pH. The pH value of the buffer solution can be…

Q: What are the physical properties of water of physiological importance? Explain

A: Water is a universal solvent with chemical formula H2O which is made up of 2 hydrogen atoms and one…

Q: Calculate the percent by mass of a solution that is prepared by dissolving 385 grams of potassium…

A: Weight percentage %= [Weight of solute]/Weight of solvent+ Weight of solute x 100

Q: föllowing would dispersion forces be the most important factor in determining physical properties in…

A: The London dispersion forces are defined as the weakest existing intermolecular forces. It is a…

Q: Convert the following pH values in both [H+] and [OH-] values. (6 points) 1. pH  =  3.95…

A: According to the definition of pH, pH = -log [H+]. According to the definition of pOH, pOH = -log…

Q: Why is 350°C water emitted from a black smoker not boiling?

A: Black smokers are one of the types of hydrothermal vents that are found in deep sea beds and appear…

Q: What is the pH of 1.77 M HCI solution? Your Answer: Answer

A: pH: It uses to measure the acidity or basicity of a solution. It is measured on a scale of 1 to 14…

Q: How many grams of sodium chloride are needed to make 0.60L of 2.3M sodium chloride solution

A: The concentration of a solution is expressed in molarity. Molarity is defined as the number of moles…

Q: H,0 Pure water Positive pressure Negative pressure H,0 H20 H,0 Solute A В C

A: Water potential: it is the potential energy of water per unit volume in comparison to pure water…

Q: 00 ml total solution, the resulting stren 5..?

A: A pharmaceutical medicine is a chemical substance that causes a biological or physiological effect…

Q: what are the four emergent properties of water that are important for life?

A: There are  four basic emergent properties of water that are very important for life are required to…

Q: Predict the pH of a sample of water if Kw were 10−10 or 10−20.

A: Kw is the equilibrium constant, which is denoted from the formula Kw = [H3O+] [OH-] = 10-14…

Q: Which mixture acts as buffer solutions? O 50 ml 0.1M H2CO3 and 100 ml 0.1M NAOH 100 ml 0.1M H2CO3…

A: A buffer solution is composed of a weak acid and its conjugate base. The buffer solution resists the…

Q: What is the final volume of NaOH solution prepared from 100.0 mL of 0.500 M NaOH if you wanted the…

A: The solution is a homogenous mixture of two or more components mixed together. It has two…

Q: Which of the following aqueous solutions has the lowest pH: 0.1 M HCl; 0.1 M acetic acid (pKa =…

A: pH is used to specify the acidity or basicity of an aqueous solution. It measures the hydrogen ion…

Q: A solution is made by mixing 56.9 g of water and 23.8 g NaCl. What is the concentration of NaCl in…

A: Given Values: Weight of the water = 56.9 grams Weight of NaCl = 23.8 grams

Q: What are the main biological functions of water?

A: Water is a transparent, inorganic, odorless, tasteless, and nearly colorless chemical substance. It…

Q: why is the different pH value of tap water and rainwater?

A: pH pH is a scale of measurement, which indicates the nature of a solution (acidic, basic or neutral)…

Q: Table salt (sodium chloride) is made up of sodium and chlorine. We are able toeat the compound,…

A: Table salt is sodium chloride. It is made up of sodium and chlorine. Sodium is a metal and chlorine…

Q: What is the pH of a 7.5 × 10⁻⁴ M CsOH solution?

A: Introduction: pH is an indicator which is used to differentiate whether the solution is acidic or…

Q: What is the concentration in % (w/v) of a solution prepared from 50.0 g NaCl and 2.5 L of water? A.…

A: Percentage: The calculation of percentage is one of the simplest and most useful of mathematical…

Q: Cork can float on water. As you examine cork under the microscope, what features do you observe that…

A: Cork (cambium) cells are dead cells present in the epidermis of the plant. The main function of…

Q: What is the written the equation for the reaction between Hydrogen and Oxygen that produces water?

A: Water (H2O) is composed of hydrogen and oxygen.  Hydrogen will react with oxygen when it is ignited…

Q: Assume that you have a stock solution of 10% SDS and you need to make 150 microliters of 0.5% SDS.…

A: Stock solution (SDS) = 10%Concentration of stock solution = 10g of SDS/ 100ml of water.Similarly,…

Q: Rank as to pOH acidity Samples pH [H1 [OH] Rank as to basicity VINEGAR 2.5 ΑΜΜΟΝΙΑ LEMON JUICE 1.5…

A: pH of a solution = -log [H+]. pH is the measure of acidity of a solution. A solution is acidic if…

Q: what is the pH of a solution with a H+ concentration of 1.44 x 10-3 M

A: pH is the potential of hydrogen.pH is a way of measurement of acidity or alkalinity.It measures the…

Q: Why does water have such interesting and unique properties?

A: Water is required for sustaining life. Water dissolves nutrients and gases. It acts as solvent for…

Q: How would you dilute 0.1 M boric acid in 1:10 ratioto 0.01M?

A: The concentration of a substance in solution is the abundance of a constituent divided by the total…

Q: The pOH of a solution of NaOH is 11.30. What is the [H+] for this solution? O 2.0 x 10-3 O 2.5 x…

A: pH is the measure of the concentration of hydrogen ions in a given solution. It is measured on a log…

Q: What are the main water properties that make water special for life?

A: Water is an inorganic compound that is a vital component of life.

Q: The pOH of a basic solution is 3.75. What is [H⁺]?

A: pH= 14-pOH =>pH= 14-3.75= 10.25 The [H+] ion concentration is inversely proportional to its pH.…

Q: If you mix 9 g of NaOH with 90 mL of water, what is the mass/volume (g/mL) concentration of the…

A: Given Values: Weight of NaOH = 9 gVolume  of the water to be mixed with 9 g NaOH= 90 ml

Q: What properties of a water molecule enable it to actas a good solvent for ionic molecules?

A: Introduction:- A solvent is essentially a material that can dissolve solutes, which are molecules…