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You need to prepare 20ml of a drug dilution of 50mg/ml from a stock solution of 2g/5ml. How many mls of diluent will be added. Can you please right it out for me, I'm not sure how to set this up.
mercury ions hg2 2 can be removed from the solution by precipitation with cl-. suppose that a solution contain aqueous
A 391 mL of sample of HClO4 has pH of 0.2439. If 619 mL of distilled water was added to the HClO4 solution, what would the new pH be
A mixture of NaCl and NaBr has a mass of 2.05 and is found to contain 0.72g of Na. What is the mass of NaBr in the mixture?
How many grams of sodium formate, NaCHO2, would have to be dissolved in 1.1 L of 0.20 M formic acid (pKa 3.74) to make the solution a buffer for pH 3.82
calculate the approximate mass of KHP required to react with 40.0 mL of 0.125 M sodium hydroxide in titration.
Write the balanced chemical equation for the neutralization reaction that occurs when an aqueous solution of nitric acid (HNO3) is mixed with an aqueous solution of sodium hydroxide (NaOH).
Draw the Lewis structure of tartaric and malic acids in a way that shows the geometry of the acid functional groups. Indicate the hybridization of each carbon
What is the major product formed when bromocyclohexane reacts with sodium azide
Use the values of Ka1 = 0.056 and Ka2 = 5.4 x 10-5 to calculate the [OH-] in a 0.898 M solution of oxalic acid (H2C2O4).
The daily energy requirement for an active adult human is around 2500 calories per day. A nutritional calorie is equal to 4.2 kJ of energy. If each ATP contains -30 kJ/mol under standard conditions, how many molecules of ATP does the body require ..
For a certain reaction ?Gorxn = 27.9 kJ/mol. What is the equilibrium constant at 225oC? Remember to convert kJ to J to have consistent units and the temperature to K.
Assuming ideal behavior, calculate the mole fraction of toluene in the solution.
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