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Calculate thePH at the equivalence point in titrating 0.100 M solutions of each of the following with 9.0×10?2 M NaOH for hydrobromic acid (HBr). HCLO2 chlorous acid, C6H5COOH benzoic acid
In the procedure, you extracted sodium chloride from the insoluble silicon dioxide and calcium carbonate by dissolving the sodium chloride in distilled water. However, calcium carbonate is actually slightly soluble in water
When the liberated hydrogen gas is collected over water at 29 degrees celsius and 752 torr, the volume is found to be 343 mL. The vapor pressure of water at 29 degrees celsius is 30.0 torr. What is the mass percentage of aluminum in this alloy?
407 mL of H2 gas is collected over water at 785.3mm Hg and 23.5 degrees C. What would be the volume of this dry gas at standard conditions?
Explain the significance of the chromic acid test. What would you observe in the case of a positive result? Do you expect 9-fluorenol to give a positive or negative result? What about the 9-fluorenone?
A mixture of 0.160 moles of C is reacted with 0.117 moles of O2 in a sealed 10.0L vessel at 500.K, producing a mixture of CO and CO2. The total pressure is 0.640 atm. What is the partial pressure of CO. 3C + 2O2---> 2CO +CO2
Calculate the pH of a buffer solution with .10 moles of C2H5COOH and .13 moles of C2H5COONa in 1.5L
The mass of a cube of iron is 252 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
Sodium Carbonate (NaCO3) is available in very pure form and can be used to standardize acid solutions. What is the molarity of the HCl solution if 25.3 mL of the solution is required to react with 0.256 g of Na2Co3
Which of the following statement correctly identifies three proteins that appear in the blood as a result of an occluded coronary artery that led to a myocardial infarction (MI)
Looking at the colors of the mixtures containing 5.0, 6.7, and 7.5 mL of EN, would you conclude that you prepared one, two, or all three complex ions when you combined the various mixtures of 2.0 X 10-2 M CuSO4 and 2.0 X 10^-2 M EN
A gas is compressed from 68.2 L to 8.0 L at 0.70 atmospheres? In addition a total of 3300 J of heat are gained from warmer surroundings. What is the change in internal energy in kJ
The reactant concentration in a zero-order reaction was 9.00×10?2{\it M} after 100s and 2.50×10?2{\it M} after 390s . What is the rate constant for this reaction
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