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A) What is the pH of a KAc/HAc buffer if the salt concentration is 60% higher than that of the acid?
B) Equal volumes of two strong acids are mixed. The pH of one is 3.80. The pH of the other is 4.80. What is the pH of the mixture?
What mass (in grams) of Al(NO3)3 (molar mass=213.01) is needed to prepare 100 mL of an aqueous solution that is 0.030 M in NO3-
The equation for the energy of the electron in the hydrogen atom is given in your text(s) as E= - 2.18 x 10^-18J x (1/n_f^2 - 1/n_i^2). However the actual equation
the balanced equation for a reaction in the process of the reduction of iron ore to the metal is shown below.fe2o3s 3
25.0 ml of ethanol density 0.789 gml initially at 7.4degc is mixed with 32.1 ml of water density 1.0 gml initially at
When solid mercury (II) is heated, it forms solid mercury (II) oxide and gaseous nitrogen dioxide and oxygen. what is the balanced equation?
Explain why it is appropiate to group a polyatomic ion in parenthses in a chemical formula, if more than one of that ion is present in the formula.
What molarity of aqueous calcium chloride solution can be expected to show the same conductivity as 0.0050 M aluminum sulfate at 12,500 units. What does the 12,500 units mean in this question?
what is the molar concentraion of the salt solution formed n this reaction? B. what is the molar concentraion of the excess reactant once this reaction has finished?
What is the mass of a single weight (assume one step work) you need to put on a bike pump to take the air in the pump from 1 atmosphere to 9 atmospheres?
The solubility product of Mg(OH)2 is 1.2 x 10-11. What minimum OH- concentration must be attained to decrease the Mg2+ concentration in a solution of MgCl2 to less than 1.0 x 10-9 M.
A galvanic (voltaic) cell consists of an electrode composed of iron in a 1.0 M iron(II) ion solution and another electrode composed of copper in a 1.0 M copper(II) ion solution
The procedure calls for 120 mg of 4-aminobenzoic acid, and 2.0 mL of absolute ethanol. If you used 131 mg of 4-aminobenzoic acid, and exactly 1.81 mL of absolute ethanol, what would be the ratio of moles of ethanol to moles of 4-aminobenzoic acid
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