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If the titration of a 25 mL sample of calcium hydroxide requires 34.45 mL of a 0.100 M HCl, what is the molarity of the base.
1. Determine the conjugate acid-base pairs in each of the following reactions:
a) NH3(aq) + H2O(l) à NH4+(aq) + OH-(aq)
b) HNO2(aq) + H2O(l) à H3O+(aq) + NO2-(aq)
2. Classify the following substances as strong or weak electrolyte, strong or weak acid, strong or weak base, or salt:
a) H2CO3 b) HNO2 c) KOH d) PbI2
e) HI f) Mg(OH)2 g) H2SO4 h) H3PO3
Fish are processed into Fish meal and used as a supplemen- tary protein food. In the processing the oil is First extracted to produce wet Fish cake containing 80 wt % water and 20 wt % bone-dry cake
A 51.0-mL volume of AgNO3 solution contains 0.0273 mol AgNO3 (silver nitrate). What is the molarity of the solution.
Calculate the composition of air (percent by mass) assuming that it only contains nitrogen and oxygen and behaves like an ideal gas
if the activation energy is 55kJ/mol, determine the rate constant at 26 celcius. dinitrogen tetroxide decompses to nitrogen dioxide with a rate constant
explain why the coupling of the diazonium salt with a phenol or an aromatic amine occurs at the para position.
you just need to find out Which Substance (given) will be to fall to the bottom of the beaker by combining them with H 2 O In A Beaker?
You want to produce a mixture containing 19 wt% NaCl. Find the volume of the second feed solution.
sample melts before you were ready to read the temperature. Should you cool the capillary and start again or prepare a fresh sample? Explain.
28.80 mL of a 0.1726 mol/L EDTA solution is required to titrate a sample to the equivalence point. How many moles of divalent metal cations were in your sample
initially the temperature is 97.3 degrees celsius. At this temperature the partial pressure of water is 745 mm Hg (torr). What is the % by mass of aniline in the distillate?
a photon of wavelength 40.0nm is used to eject an electron with the energy 22.3eV from a molecule.calculate the ionization energy of the molecule and tha associated wavelength of the elctron..
Which of the following is not true regarding social development?
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