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I need to make 15.0 mL of 0.20M NaOH from 3.0M NaOH stock solution. How do I make the solution? And I need to tell how to make the solution.
Solutions of known concentration can be prepared either by dissolving a known mass of solute in a solvent and diluting to a desired final volume or by diluting the appropriate volume...
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Find the molarity of a solution prepared by dissolving 50gram of NaOH in 100ml of water
Molar mass of NaOH=39.997=50/39.997= 1.25moles= 1.25/0.1= 12.5mol/L
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A solution of ethanol is prepared by dissolving 25.0 ml of ethanol in enough water to give a total volume of 250.0 ml. What is the percent-by-volume concentration of ethanol?
percent v/v is (mL ethanol/mL solution)×100.So you have 25.0 mL ethanol/250 mL(25/250)×100 = 10% v/v.
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student prepares a solution by dissolving 51.923 g of sugar in enough water to make 519 cm^3 of solution. calculate the number of grams of sugar per mL of solution.
0.1 grams per mL
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An isotonic saline solution was prepared by dissolving 0.92 g of NaCI in enough distilled water to make 100 ml solution. What is the percent by mass/volume of the solution?
100-0.92= 99.0899.08/100×100= 99.08%
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An isotonic saline solution was prepared by dissolving 0.92g of NaClin 2 points enough distilled water to make 100ml solution. What is the percent by mass/volume of the solution?
Molecular weight of isotonic saline = 58.50.92×58.5 = 53.8253.92/100×100= 53.92%
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A 6.0 grams of NaOH is dissolved in distilled water to make 1.60 - liters of solution. What is the pH of the NaOH solution? AW Na = 23 g/mol ; AW O = 16 g/mol ; AW H = 1 g/mol
pH of the NaOH solution =12.7
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Calculate the molarity of a solution prepared by dissolving 78.6g of KF in enough water to produce 225ml of solution. (at mass of F= 19g/mol, K= 39.10g/mol
molarity = amount / liter amount n = m/Mw m-mass Mw - molecular mass in the question m = 78.6 g Mw = 58.1 g/mol n = 78.6/58.1 = 1.35...
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Calculate the [H3O+], [OH], pH, and pOH for a solution prepared by dissolving 3.1g KOH(s) (FW=56g/mol) unto enough water to give a volume of 0.500L.
Answer on Question #99054 – Chemistry – OtherTask:Calculate the [H3O+], [OH-], pH, and pOH for a solution prepared by dissolving 3.1g KOH(s) (FW=56 g/mol) unto enough water to give a...
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From an initial mix of: 2 mol Cl2, 1 mol Br2, 0.5 mol I2, 0.5 mol Cl−, 1 mol Br−, 2 mol I−; the total quantity of I2 present after all possible reactions occur is
0.5 mol I2 and 0.5 mol Cl- will not react with anything; 2 mol I- will react with one mol of Cl2 producing one mol of I2: 2I- + Cl2...
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