I want a solution that is 1/10th the strength of my stock solution. I want 20 microliters of total volume of solution. How much stock solution and how much water should I add to acheive this?
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I want a solution that is 1/10th the strength of my stock solution. I want 20 microliters of total volume of solution. How much stock solution and how much water should I add to acheive this?
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- 50 mL of 5mM NaCl solution from 1 M NaCl solution3 mL of a 45 mM stock solution of a substrate is added to 8 mL of water. Calculate the following values. The substrate molecular weight is 125 g/mol. Calculate the following values: Substrate Volume in mL Dilution Factor Substrate number of moles Substrate concentration for the diluted solution in mM Substrate concentration for the diluted solution in mole/L Substrate concentration for the diluted solution in mg/mLEstimate the pH of a 7.18 x 106 M HF solution. You can calculate the lowest possible pH, knowing that the actual value will be higher. Your answer should contain 3 decimal places as this corresponds to 3 significant figures when dealing with logs. pH will be above Select the solution with the highest pH. Multiple Choice 0.0225 MLIOH 0.0225 MH2CO3 0.0225 MCH3NH2
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- Is there a difference between pH measurements using the pH meter and the pH paper? Compare the initial pH and the final pH of each sample. What was the most effective buffer? What was the least effective? Solución pH inicial pH final Diferencia water 7.45 2.48 0.1 M NaCl 7.28 2.03 milk 6.78 6.45 buffer de fosfato 8.76 7.78 **** Calculate the difference (subtract) the initial pH - final pH values to identify the effectiveness of each solution as a buffer. Values with little difference mean that a less drastic change occurred and are therefore more effective. On the contrary, values by much difference reflect drastic changes in pH and are less effective. What do buffers do and why are they important in biological systems?Given a BSA stock solution of 4mg/mL how would you prepare a 5 mL sample with a final concentration of 1 mg/mL?There is An order is received for 10 fl oz of a 5% solution. In stock is a 10% solution. How many milliliters of a 25% solution are needed?Answer __________ How many milliliters of water are needed?Answer __________