When you Boil water in utensil, a white ppt gets deposited in inside walls of utensils. Identify the ions responsible for it. Also give the reaction behind that?
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When you Boil water in utensil, a white ppt gets deposited in inside walls of utensils. Identify the ions responsible for it. Also give the reaction behind that?
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- The first step in the procedure asks you to prepare five dilutions of the protein standard (BSA) in the range of 0.2 to 1.0 mg/ml. For each concentration, a volume of 1.0 mL should be prepared. Describe how you will prepare these standards using a stock solution of BSA that is 2.0 mg/ml.Give the functions of the following ingredients, then name a branded/commercial skin or hair care product where the said material is used. Ozokerite Wax Sodium Ascorbate Lactic Acid 90% Titanium Dioxide Magnesium Aluminum Silicate Mineral Oil 50 SUS Tween 80 Zinc Oxide Retinol DMDM HYDANTOINFluoride treatment strengthens tooth enamel by converting hydroxyapatite, Ca5(PO4)OH, into fluorapatite, Ca5(PO4)3F. Fluoraparite is stronger and more resistant to acid than hydroxyapatite. If the solubility of fluorapatite is 6.1 x 10^-8 mol/L, what is its Ksp? Ca5(PO4)3F(s) -> 5Ca^2+ + 3PO4^3- + F-
- What is the net charge on Gln at neutral pH (for the dominant ionic species)?Use the following observations and refer to the steps 6 through 9 of the procedure to determine which cations (Ba2+, Ca2+, Mg2+) are present and absent in an unknown solution. The unknown solution in test tube #1 plus (NH4)2SO4 gives no reaction. The solution in test tube #1 is poured into test tube #2. The solution in test tube #2 plus (NH4)2C2O4 gives no reaction. The solution in test tube #2 is poured into test tube #3. The solution in test tube #3 plus Na2HPO4 and NaOH gives a white precipitate. The white precipitate in test tube #3 dissolves in HCl; magnesium indicator and NaOH is added until the solution tests basic. A blue gel is observed at the bottom of the test tube after centrifuging. Group of answer choices Just barium is present just Calcium is present All three cations are present Calcium and Barium are present Magnesium and Calcium are present Just magnesium is presentWhat is the mirror image of this structure?
- Using the concept of IMFA, explain why a paper clip floats on water when 3-5 drops of alcohol was added and why on another basin the other paper clip sinks on water when 3-5 drops of soap solution was added.Use the following table to answer the questions Ion Extracellular Concentration (mM) Intracellular Concentration (mM) Na+ 440 50 K+ 20 400 Cl- 560 52 Ca++ 10 1 Calculate the equilibrium potential for Na+, K+, Ca++, and Cl- ions? If the resting membrane potential is -65, give the direction of the flow of Na+, Ca++, K+, and Cl- ion. What will happen to the Cl- equilibrium potential, if one changes the extracellular chloride concentration from 560 mM to 100 mM? Give the direction of Cl- flow. What is the effect of addition of extracellular TTX and TEA on equilibrium potential? If one reduced the extracellular concentration of Na+ around a neuron, what would happen to the membrane potential? If one increased the extracellular concentration of K+ around a neuron, what would happen to the membrane potential?At a certain temperature 0.0050 g of BaF2 dissolves in 100.0 mL of water. A. Calculate the molarity of this solution. (S) B. Calculate the Ksp of BaF2 at this temperature.
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