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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)
Consider the titration of a 26.1 mL sample of 0.115 M RbOH with 0.110 M HCl. Determine each of the following.
suppose that you are given a 0.700 m acetic acid solution and a 0.500 m sodium acetate solution. determine the volumes
A solution consists of 0.450 mole of pentane, C5H12, and 0.250 mole of cyclopentane, C5H10. What is the vapor pressure of pentane in this solution at 25°C?
1-A 27.9 g sample of ethylene glycol, a car radiator coolant, loses 680. J of heat. What was the initial temperature of ethylene glycol if the final temperature is 32.5°C (c of ethylene glycol = 2.42 J/gK)
A voltaic cell consists of a Zn/Zn^2 + half-cell and a Ni/Ni^2 +half-cell at 25C. The initial concentrations of Ni^2 + and Zn^2 + are 1.70 M and 0.100 M, respectively. What is the initial cell potential
A 45.8 mL sample of a 5.8 M KNO3 solution is diluted to 1.00 L. What volume of the diluted solutions contains 15.0 g of potassium nitrate
what is the purpose of anhydrous CaCl2? Why it is important that none of the solid CaCl2 be included in the final distillation of your 1-bromobutane?
Calculate the nuclear binding energy of one lithium-7 atom. the measured atomic mass of lithium-7 is 6.015amu.
What is the geometry that describes how the electron pairs are arranged about the chlorine atom in ClF3
The solution was boiled to remove CO2, following which the excess HClO4 was back-titrated with 10.12ml of dilute NaOH. In a separate experiment, it was established that 27.43 ml of HClO4 neutralized the NaOH in a 25ml portion. Calculate the molari..
A 1.70-g sample of a large biomolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
a sample of 2 g of nitrogen can be combined with 2.285714 g of oxygen to form nitric oxide gas no. what mass of oxygen
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