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Calculate the molarity (M) of HCl used in the titration of a 0.2239g sample of sodium carbonate that required 39.01mL of the titrant (HCl) to reach the second equivalence point.
A pharmacist resolute that 14.5 g of NaOH are necessary for a particular reaction. The source of the NaOH is a 2.80 M solution. Explain how many mL of the solution will the pharmacist need
Consider the titration of 101 mL of 0.929 M acetic acid, Ka = 1.8 E -5, with 1.093 M KOH for the next three problems. 1) What is the pH of the solution at the equivalence point?
the daily output of stomach acid gastric juices is 1000ml to 1400 ml. prior to a meal stomach acid hcl typically has a
Question- Write the charge balance for an aqueous solution of phosphoric acid, H3PO4. The coefficients in the charge balance have been provided. Remember to subscript and superscript as necessary when writing the chemical formula. Write the comple..
A microwave oven operates at 2.70 . What is the wavelength of the radiation produced by this appliance
Problem- How many moles of KBr are present in 25 mL of a 1.5 M solution. If the KBr were isolated and dried, how much would it weigh.
A 1.25-gram sample of FeC2O4 is added to an evacuated 2.00-L steel vessel. The vessel is heated to 400°C, at which point all the FeC2O4 is decomposed: FeC2O4 (s) # FeO (s) + CO2 (g) + CO (g) Calculate the total pressure inside the vessel at 400°C
Determine the molar ratio of hydrogen to carbon in the fuel (r), where r=y/x, and the percentage excess air used in the combustion.
Draw the structure of a compound with the following analytical data: a mw of 72 g/mol, no silver mirror in a Tollen's test, and a yellow precipiate formed in an iodoform test.
what is the concentration of hydrogen ions in a solution containing 0.321 m hocn cyanic acid and 0.223 m naocn sodium
If a buffer solution is 0.440 M in a weak acid (Ka = 1.0 × 10-6) and 0.230 M in its conjugate base, what is the pH?
the LDH molecule always contains 4 polypeptide subunits and each subunit can be either a H (heart) or a M (muscle) subunit. how many isozymes are possible
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