Dissolve 2ml from stock in 8ml of diluent.
A 100 times dilution of a stock solution means that you are adding 1 part of the stock solution to 99 parts of a diluent (such as water) to make a total volume of 100 parts. This results in a final solution that is 1/100th the concentration of the original stock solution.
To prepare 600 mL of 1 M HCl solution from a 6 M stock solution, you can use the formula: M1V1 = M2V2, where M1 = concentration of stock solution, V1 = volume of stock solution needed, M2 = final concentration, and V2 = final volume. Plugging in the values: 6 M x V1 = 1 M x 600 mL. Therefore, V1 = 100 mL. Therefore, you would need to measure 100 mL of the 6 M stock solution and dilute it to 600 mL with water to make a 1 M HCl solution.
To prepare 100 mM phosphoric acid solution, you can dilute a more concentrated phosphoric acid stock solution to the desired concentration by adding the appropriate volume of water. Calculate the volume of the stock solution needed using the dilution formula: C1V1 = C2V2, where C1 is the concentration of stock solution, V1 is the volume of stock solution needed, C2 is the desired concentration (100 mM), and V2 is the final volume of the solution.
To calculate the concentration of a stock solution, divide the amount of solute by the volume of solvent, and then multiply by 100 to get the concentration in percent.
To prepare a 0.5 M acetic acid solution using a 2.5 M stock solution, you will need to dilute it. The formula for dilution is C1V1 = C2V2, where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume. Plugging in the values, you will need 20 ml of the 2.5 M stock solution to make 100 ml of a 0.5 M acetic acid solution.
A 100 times dilution of a stock solution means that you are adding 1 part of the stock solution to 99 parts of a diluent (such as water) to make a total volume of 100 parts. This results in a final solution that is 1/100th the concentration of the original stock solution.
To prepare 600 mL of 1 M HCl solution from a 6 M stock solution, you can use the formula: M1V1 = M2V2, where M1 = concentration of stock solution, V1 = volume of stock solution needed, M2 = final concentration, and V2 = final volume. Plugging in the values: 6 M x V1 = 1 M x 600 mL. Therefore, V1 = 100 mL. Therefore, you would need to measure 100 mL of the 6 M stock solution and dilute it to 600 mL with water to make a 1 M HCl solution.
To make a 5% bleach solution from an 8.25% solution, you can use the dilution formula (C_1V_1 = C_2V_2), where (C_1) is the concentration of the stock solution (8.25%), (V_1) is the volume of the stock solution you need, (C_2) is the desired concentration (5%), and (V_2) is the final volume of the diluted solution. For example, to make 100 ml of a 5% solution, you would calculate (V_1 = \frac{C_2 \times V_2}{C_1} = \frac{5 \times 100}{8.25} \approx 60.61) ml of the 8.25% solution. Then, add enough water to reach a total volume of 100 ml.
To prepare 100 mM phosphoric acid solution, you can dilute a more concentrated phosphoric acid stock solution to the desired concentration by adding the appropriate volume of water. Calculate the volume of the stock solution needed using the dilution formula: C1V1 = C2V2, where C1 is the concentration of stock solution, V1 is the volume of stock solution needed, C2 is the desired concentration (100 mM), and V2 is the final volume of the solution.
To calculate the concentration of a stock solution, divide the amount of solute by the volume of solvent, and then multiply by 100 to get the concentration in percent.
To prepare a 0.5 M acetic acid solution using a 2.5 M stock solution, you will need to dilute it. The formula for dilution is C1V1 = C2V2, where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume. Plugging in the values, you will need 20 ml of the 2.5 M stock solution to make 100 ml of a 0.5 M acetic acid solution.
To prepare 100ml of 0.5N HCl solution from a stock solution of 5.0N HCl, you need to dilute the stock solution with water. To calculate the volume of stock solution needed, you can use the formula C1V1 = C2V2, where C1 is the concentration of the stock solution, V1 is the volume of the stock solution needed, C2 is the desired concentration, and V2 is the final volume of the diluted solution. So, V1 = (C2 * V2) / C1 = (0.5 * 100) / 5 = 10ml of the stock solution. Dilute this 10ml of stock solution to 100ml with water.
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To prepare 100 ml of 0.4 M magnesium sulfate from a 2 M stock solution, you would need to use the formula C1V1 = C2V2 where C1 is the initial concentration, V1 is the volume of stock solution to be used, C2 is the final concentration, and V2 is the final volume. Plugging in the values, you would calculate V1 to be 20 ml. Therefore, you would mix 20 ml of the 2 M stock solution with water to make a total volume of 100 ml to get a final concentration of 0.4 M magnesium sulfate.
To make a 2% sodium hypochlorite solution from a 12% solution, you can set up the equation: 12% solution * x litres = 2% solution * 100 litres Solving for x, you get: x = (2% solution * 100 litres) / 12% = 16.67 litres Therefore, you would need 16.67 litres of the 12% sodium hypochlorite solution to make 100 litres of a 2% solution.
Preparation of standards Prepare a stock uric acid solution of 100 mg/L. Dilute it to give working concentrations of 10, 20, 30, 40, 50 and 60 mg/L. Procedure:1 Prepare a 100 mg/L stock solution of uric acid Weigh out 100 mg uric acid, transfer it to a 1 L volumetric flash, add about 900 ml distilled water, and then add about 100 µl of 0.6 N NaOH to help dissolve the uric acid. Make up to the volume with water when uric acid is fully dissolved.2 Dilute the stock solution to give working concentrations of 10, 20, 30, 40, 50, 60 mg/L. To prepare 50 ml of the working standards 5, 10, 20, 30, 40, 50 mg/L respectively, weigh 10, 15, 20, 25, 30 g of stock solution into 50 ml volumetric flasks and make up to volume with distilled water.
To make a 0.3% Triton X-100 solution, you would mix 0.3 grams of Triton X-100 with 100 mL of a suitable solvent, such as distilled water. Stir well to ensure thorough mixing. Measure the Triton X-100 accurately using a scale that can measure in milligrams for precision.