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Consider the titration of 50ml of 0.10M pyridine (C5H5N,Kb=1.7*10^-9) with 0.10M HCl. What is the pH of the solution at the following points along the titration curve:
1) Before any titrant is added
2) After 15ml of titrant is added
3) After 25ml of titrant is added
4) After 50ml of titrant is added
5) After 60ml of titrant is added
Calculate the mass of silver chloride required to plate 135 mg of pure silver. Silver chloride, often used in silver plating, contains 75.27% Ag.
Determine the entropy change when 5.60 mol of HCl(l) boils at atmospheric pressure with the following information
what is the calculated value of partial pressure of o2 in acid mine water of ph 2 in which fe2+=fe3+.
Calculate the molarity of 736 mL of a solution that contains 153 g of sucrose C12H22O11.
A 44.2 L sample of a gaseous hydrocarbon, measured at 1.00 atm pressure and 25 C is burned in excess oxygen, liberating 2.55x10^3 kj of heat at constant pressure.
what is the ph of a solution formed when 100 ml of a base with ph off 13 is diluted to 1 liter with pure water?
A patient needs 2.70×10^-2 of a sulfa drug. There are 8.00 tablets in stock. How many tablets should be given?
it is found that 1.431g of element x ciontains 7.509 *10^21 atoms. calculate the atomic mass of x
Given the following balanced reaction, if a mixture of 1.50 mol of Al and 3.00 mol of Cl2 are allowed to react, how many moles of AlCl3 are formed, assuming a 75% yield?
Consider the following reaction. N2 + 3 H2 → 2 NH3 . 28.0 grams of N2 and 5.04 grams of H2 are reacted, producing 17.8 grams of NH3. What is the percent yield?
An electric power station annually burns 3.3 107 kg of coal containing 1.4 percent sulfur by mass. Calculate the volume of SO2 emitted at STP
Use the PhET to complete the sentences describing how electronegativity is related to bond dipole experienced by the molecule.
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