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Determine how many grams of each of the following solutes would be needed to make 3.00 x 10^2of a 0.100 M solution.
a) CSI
b) H2SO4
c) Na2CO3
d) K2Cr2O7
e) KMnO4
A solution containing iodide ions has a percent transmittance reading of 72.3%. what is the molarity of the iodide ion in this solution
Calculate concentrations of H30+ and the pH of each acidic solution. Since HCl is a monoprotic acid, the H30+ concentrations are equivalent to HCl. First do equation: (M con)(V con)=(M dil)(V dil)
What is the molecular formula for the compound containing 30.4% nitrogen and 69.6% oxygen by mass and having a molar mass of 92.0 g?
Calculate the mass of aluminum deposited on the purified aluminum metal by the application of a current of 1.225 kiloamperes for 30 minutes from a very large quantity of a solution containing Al3+ ion in the Al2O3/Na3AlF6 molten state
1- calculate the radius of a marble of mass 75.673g and density 2.443g/cm3, volume of sphere V= (4/3)?r3)
Cd2 forms two complexes with C2H3O2, with the following formation constants:(a) Find K2 for the reaction, (b) You prepare 1.00 L of solution containing 0.110 mol CH3CO2Na and 4.00 × 10-4 mol Cd(ClO4)2. Compute the fraction of cadmium in the form ..
If a second experiment is done with half as much H2O2 as the experiment in question 1, and the solution turns blue in 180 seconds, what is the order of the reaction with respect to H2O2?
When a 17.0 mL sample of a monoprotic weak acid is titrated with 0.10 M KOH, it generates the titration curve shown. a) What is the molar concentration of the original sample of weak acid?
Determine the pH of a 0.62 M NH4NO3 solution at 25°C. The Kb for NH3 is 1.76 × 10-5.
Imagine that a beaker of pure water and another beaker containing water and some NaCl are both boiling under 1 atm pressure. Which of the following statements do you think is correct for this case
Consider an unknown that is approximately 50.% KHP. What mass of the unknown would be required to react with 40. mL of 0.10 M NaOH?
calculate change of pH value when we add 100mL of 0,4M HCl to 100mL of 0,4M NH3. K(NH3)
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