What is the new ph
A compound is a weak acid with a pKa of 7.4. You make 100 mL of a 1.0 M solution of this compound. The pH of the resulting solution is 8.0. Then you add 40 mL of 1.0 M hydrochloric acid (HCl) to the solution. What is the new pH?
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A dead alkaline battery is found to contain a compund of Mn and O. Its analysis gives 69.6% Mn and 30.4% O.
Caffeine is a stimulant found in coffee and tea . A solution of caffeine in chloroform as a solvent has a concentration of 7.90×10-2 . Calculate the percent caffeine by mass.
The absorbance of the new solution was 0.500. What is the concentration of Cu2+ in the sample? State any assumptions you might make and pay attention to significant figures.
What is the molarity of a solution made by dissolving 0.0815 grams of Na2SO4 in enough water to form exactly 750. mL of solution?
The pH of the resulting solution is 8.0. Then you add 40 mL of 1.0 M hydrochloric acid (HCl) to the solution. What is the new pH?
How is the solubility of manganese(II) sulfide affected by the addition of aqueous potassium hydroxide to the system?
Describe the process that will result in the greatest amount of work done by the system with a constant external pressure and calculate w. What is the least amount of work done with no restrictions on the external pressure?
A 5.00 g sample of aluminum pellets (specific heat capacity = 0.89 J/C g) and a 10.00 g sample of iron pellets (specific heat capacity= .45J/C g) are heated to 100.0 C.
$15 for original work in APA format please 3-4 references NO INTERNET COPY WORK You have been hired as an executive director of a small nonprofit organization. Among your many duties are to determine an annual budget and develop a fiscal plan for
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Evidence of Cultural Impact: The cultural impact of economic factors can be observed through specific practices and initiatives within the NSHA:
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Point of use cleaning of used instruments MUST be performed immediately following the procedure in the following location