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A particular sample of vinegar has a [H3O^+] of 1.26 x 10^-3 M. Assuming that acetic acid is the only acid that vinegar contains (Ka = 1.8 x 10^-5), calculate the concentration of acetic acid in the vinegar.
What is the molecular formula for the compound containing 30.4% nitrogen and 69.6% oxygen by mass and having a molar mass of 92.0 g?
What volume of 0.300 N NaOH would be required to bring 16.0 mL of distilled water that has a pH 7.00 to a new pH of 12.42?
How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18J(g*C). can someone explain this in detail. other descriptions don't answer this well and im lost when i try and do it
Determine the enthalpy of the reaction. Assume that the density and the specific heat of the solution are the same as water. Incude the correct sign.
Which of the following factors affect the resolution (separation) of two compounds: (A) nature of the stationary phase; (B) eluent composition; (C) amount of sorbent used; (D) color of compounds being separated?
if it takes 6.02 kJ of heat energy to melt a mole of ice, how much heat is absorbed when 6.30 g of water melts?
How many moles of bromine trifluoride are needed to react completely with 9.68 moles of titanium (IV) oxide?
A sample of urea contains 1.009 g N, 0.145 g H, 0.432 g C, and 0.576 g O. What is the empirical formula of urea?
although aspirin solutions do not absorb visible light, we are still able to use visible light in an experiment to analyze the purity of aspirin. Why?
What range of accelerating voltages would be required to cover the mass range between 16 and 625, for singly charged ions, if the field strength is held constant?
magnesium sulphate MgSO4 has an observed osmotic pressure =7.6 atm at the temperature of twenty five degree celsius. Determine the observed van't Hoff factor?
determine the empirical formula of a substance (Vanillin) that contains 63.15% carbon, 5.30% Hydrogen, and 31.55% oxygen.
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