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If a 30.00 ml sample of an unknown H3PO4 solution is titrated with a 0.130 M NaOH solution. Then the Equivalence point is reached when 27.32 ml of NaOH solution is added. Explain what is the concentration of the unknown H3PO4 solution? The neutralization reaction is
H3PO4 (aq) +3 NaOH (aq) => 3H2O(l)+Na3Po4(aq)
Calculate the mass of the deuteron given that the first line in the lyman series of H lies at 82,259.098 cm-1, whereas that of D lies at 82,281.476 cm-1 , and calculate the ratio of the ionization energies of H and D.
If replacing magnesium with an equal weight of sodium, how would the enthalpy of the reaction changed?
The iron-chromium voltaic cell utilizes the following reaction with a measured potential of 0.30 V. What is Î"G ° for this reaction?
There are 2.2 mg of lead in exactly 500 g of a water sample. What would the concentration of lead be in parts per million? Round to the nearest tenth. Don't forget the units
a 155 gram sample of copper was heated to 150 degrees Celsius then placed into 250 gram of water at 19.8 degrees Celsius. Calculate the final temperature of the mixture.
Calculate the standard reduction potential for the X half-reaction. The standard reduction potential of the copper half-reaction is 0.52 V. (Hint, write the half-reactions and the overall chemical equation for the spontaneous reaction.)
The catalyzed reaction took 2 minutes. The non-catalyzed reaction took 30. Solutions in each consisted of 5 mL phosphate citrate buffer
Can someone show me how to draw the reciprocal lattice for a simple tetragonal structure with a=0.4nm and c=0.5nm?
Electromagnetic radiation with a wavelength of 425 nm appears as violet light to the human eye. The energy of one photon of this light is 4.68 × 10-19 J. Thus, a laser that emits 1.3 × 10-3 J of energy in a pulse of light at this wavelength produc..
A metal oxide with the formula MO2 contains 21.23% oxygen by mass. Type the symbol for the element represented by M in the box below.
Some of the formulas below could be either molecular or empirical formulas; however, some could only be molecular formulas. Which of the following formulas must be molecular formulas
Sulfuric acid is formed when sulfur dioxide reacts with oxygen and water. write the balenced chemical equation for the reaction. if 12.5 mol SO2 reacts, how many mol H2SO4 can be produced. How many mol O2 is needed.
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