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When 0.0030mol of HCL is added to 100ml of a 0.10M solution of a weak base, R2NH, the solution has a ph of 11.10. What is Kb for the weak base?
Answer all three questions and provide required steps
A student titrated a sample containing 105 ml of 0.28M NaOH with 0.74 M HCl. Explain what is the pH of the solution after 23 ml of the hydrochloric acid has been added
Discuss in detail the healthcare applications of chemical reactions. Which chemical reactions would you consider to be of importance to healthcare professionals? Why? In which situations are these chemical reactions useful to healthcare profession..
How many grams of benzoic acid would you add to 30 mL of 0.27M sodium benzoate in order to prepare a buffer solution at pH=4.5? Ka of benzoic acid is 6.3E-5.
The of hydroxylamine, NH2OH is 1.10*10^-8 . A buffer solution is ready by mixing 110mL of a 0.38M hydroxylamine solution with 50mL of a 0.25M solution.
If 18.4 mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia?
If four moles of sodium sulfate are dissolved in water how many moles of sodium ions would be in solution?
A student decomposed Potassium Chlorate to create oxygen gas. The oxygn was collected by displacement of water at 22 degrees C and the total pressure was 754 torr.
Utilize the ion-electron method to balance each of the redox reactions. After balancing the equations answer the subsequent questions for each reaction
What are the units of the universal gas constant R? When can a real gas behave as an ideal gas? Are these conditions met in this experiment?
The density of a sodium sulfate solution is 1.07 g/cm3. The solution is 8.00% sodium sulfate by mass. How many cm3 of the solution are needed to supply 4.28 g of sodium sulfate?
Steam is expanded in a turbine from 1200 F and 600 psi to 500 F and 14.696 psi. what is the change in both internal energy and the enthalpy of the stream between the inlet and exit states
Explain how the procedure for the preparation of isopentylacetate could be modified to raise the yield and purity of the products
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