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An unknown contains citric acid, C6H8O7, a tribasic acid, and potassium chloride. If 2.135g of unknown requires 19.90 mL of 0.688 NaOH for complete neutralization of all reactive protons, calculate the percent by mass of citric acid in the sample. Indicate clearly your calculations and reasoning.
Problem- What is the concentration of K+\rm K^+ ions in a 0.045 M~M K2CO3\rm K_2CO_3 solution assuming complete dissociation
A 52.0 mL volume of 0.35 M CH3COOH (Ka = 1.8*10^-5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 23.0 mL of NaOH.
europium europium is a chemical element with the symbol eu and atomic number 63 crystallizes in a body-centered cubic
calculate the concentration in molarity of a NaOH solution if 25.0 ml of the solution are needed to neutralize 17.4 ml of a .312 M HCl solution.
electronic structure both the bohr model and the quantum modelwave function provide information about the electronic
A household refrigerator with a COP of 1.2 removes heat from the refrigerated space at a rate of 60 kJ/min. Determine the electric power consumed by the refrigerator and the rate of heat transfer to the kitchen air.
In my organic chemistry class we were asked a question to use this theory to account for bond lengths between ethane, ethene, and ethyne. I was wondering what this theory actually was about.
Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 6.10 MJ of energy (in the form of heat)
How many grams of NH4Cl (FM: 53.5) and how many mL of 6 M NaOH should be added and brought to 250 mL to make a buffer solution of pH of 9.0 and a total molar concentration of 0.500. The pKa of NH4+ is 9.24
A student takes 195. g of BaCl2, and reacts it according to the following equation: 3BaCl2 + Al2(SO4)3 → 3BaSO4 + 2AlCl3 How many moles of AlCl3 are formed?
What is the minimum volume of 6.0 M HCl(aq) needed to completely dissolve 3.20 g of aluminum in this reaction?
The observations listed were made on different solns. Given the observations state which ion studied in this experiment is present. If the test is not definitive, indicate that with a (?).
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