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At what pH is the weak base, pyridine, dissociated by 5%? Pyridine + H2O <---> Pyridium cation + OH- Kb = 1.71*10 ^-9 A. pH = 5.5 B. pH = 6.5 C. pH = 7.5 D. pH = 8.8 E. pH = 10.1
When the following two solutions are combined, a precipitate forms. CaCl2(aq) Rb3PO4(aq)Which of these is TRUE concerning the total ionic equation for the process
in the laboratory a student named georgia weighed 5.95 g of an unknown solid mixture containing benzoic acid copper ii
An insulated tank contains half liquid and half vapor by volume in equilibrium. The release of a small quantity of vapor without the addition of heat will cause
Please help step by step!!! A 0.050 mole sample of N2 gas is heated from 25 °C to 325 °C at constant volume. Calculate the ?S of the system given that the molar heat capacity at constant volume, C, of N2 is 20.8 J· K-1 · mol-1
What is the molecular equation, total ionic equation, and net ionic equation for Cu(NO3)2 and NaOH
The printed label on a bottle of commercial vinegar states that the acetic acid concentration is 5%. (a) If the manufacturer had reported two significant figures int he concentration, what would the percentage range be so that all values would rou..
An unknown carbonyl compound tested positive when mixed with chromic acid solution. It also showed positive results in the iodoform test. Draw the structure of this compund
The vapor pressure of ethanol at 34.7 degrees Celsius is 100mmgh, and the heat of vaporization of ehanol is 38.6 kj/ mol. What is the vapor pressure of ethanol in mm Hg at 65.0 degree celcius
Draw any one of the skeletal structure of a secondary alkyl bromide with a molecular formula C6H13Br and two stereogenic centers. Indicate chirality by using wedge and hash wedged notation.
Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 436 mmHg and the temperature is 9.00 C?
A sample of h20 with a mass of 46.0 grams has a temperature of -58 degrees celcius. how many joules of energy are necessary to heat the steam from 100 degrees celsius to 114 degrees celcius.
A solution is known to contain Bi3+ ion or Cd2+ ion or both. Describe the test(s) that could be used to separate and identify these ions. Describe the results you would expect to see for each ion, if that ion were present.
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