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Problem- 0.40 moles of an unknown acid (HA)is added to 600 ml of pure water. The pH of the resulting solution is 3.00. What is concentration of A- in the solution? What is the Pka of the acid?
I want you to explicate the chemistry in this problem
Problem- 10.00 mL of 1.000M HA (a weak acid) was mixed with a 5.00mL NaOH. Then the mixture was diluted to 50.0mL with water. The pH of the solution reads 5.00. 1. Calculate moles of each. What is the limiting reactant
A compound contains only C, H, and N. Combustion of 31.5 mg of the compound produces 30.2 mg CO2 and 37.0 mg H2O. What is the empirical formula of the compound
Solid lithium metal and diatomic fluorine gas react spontaneously. Give the balanced chemical equation (including phases) that describes this reaction.
Synthesize the subsequent compound starting with benzene: 2-t-butyl-4-benzoic-1-sulphonic acid. Demonstrate the reactions in steps drawing structural formulas as well as add the proper catalysts above the arrow.
Electromagnetic radiation with a wavelength of 725 nm appears as red light to the human eye. The frequency of this light is
In the reaction below, 2.41 atm each of H2 and Br2 were placed into a 1.00 L flask and allowed to react: H2(g) + Br2(g) 2 HBr(g) Given that Kc = 52.2, calculate the equilibrium pressure of H2.
A particular laser consumes 140.0 Watts of electrical power and produces a stream of 2.59×10^19 photons/second 1012nm. What is the percent efficiency of the laser in converting electrical power to light
The Heat of vaporization delta Hvap of carbon tetrachloride (CCl4) at 25C is 39.4 kJ/mol. If 1 mol of liquid carbon tetrachloride at 25C has an entropy of 216 J/K, what is the entropy of 1 mol of the vapor in equilibrium with the liquid at this te..
Question- Consider two cells, the first with Al and Ag electrodes, and the second with Zn and Ni electrodes, each in appropriate 1.00 M solutions of their ions.
Using the standard enthalpies of combustion, calculate the standard enthalpies of the following reactions: A. C2H5OH(l)+3O2(g)>2CO2(g)+3H2O(l)
What is the difference between a hypothesis and a theory? a hypothesis is a proposal that has been tested extensively, whereas a theory is an initialy stated proposal a hypothesis is a conclusion made after a theory was tested words hypothesis
Calculate the molalities of the following aqueous solutions. (a) 2.26 M sugar (C12H22O11) solution (density of solution = 1.12 g/mL) m (b) 0.93 M NaOH solution (density of solution = 1.04 g/mL) m (c) 5.64 M NaHCO3 solution (density of solution = 1..
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