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A certain monoprotic weak acid with Ka = 6.8 × 10-7 can be used in various industrial processes, but is no longer used in chemistry teaching labs because it tends to explode when it gets old. (a) What is the [H+] for a 0.748 M aqueous solution of this acid and (b) what is its pH?
What are the equilibrium partial pressures of CO and CO2 if CO is the only gas present initially, at a partial pressure of 0.988 atm?
Explain why selectivity in isocratic HPLC system ideally should not depend on eluent composition. (Use thermodynamic derivation to support your explanation).
a graduated cylinder contains 142 of water. a 15.0 piece of iron density 7.86 and a 19.0 piece of lead are added.
what is the molar concentration of the salt solution formed in this reaction? What is the molar concentration of the excess reactant once this reaction has finished?
N2 +3H2= 3NH3 What is the limiting reactant/ maximum number of moles of NH3 formed from 2.0 moles of n2 and 2.0 moles of H2
How much heat is required to convert 47 g of ethanol at 36 degrees Celsius to vapor phase at 78 degrees Celsius?
If the methane contained in 4.00 L of a saturated solution at 25 C was extracted and placed under STP conditions, what volume would it occupy?
What are the protons and neutrons that are emitted from a helium atom called? Atomic mass is expressed in atm.
Why would you reflux any reaction. Why wouldn't you simply boil the reaction in a erlymeyer flask
Name an element in the fourth period of the periodic table with a total of 4 4p electrons. Name an element in the fourth period of the periodic table with a total of 3 3d electrons Name an element in the fourth period of the periodic table with a ..
What is the exact reaction mechanism of the hydrolysis of maleic anhydride with heat followed by adding a zinc catalyst
Consider the following reaction at equilibrium. What affect will adding more SO3 have on the system?
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