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Determine the pH of a 0.62 M NH4NO3 solution at 25°C. The Kb for NH3 is 1.76 × 10-5.
If 5.00 ml of a solution containing .0400 M iron is placed in a 100.0 ml volumetric flask and filled to the mark with deionized water, what will be the concentration of iron in this new solution?
Compute the atomic mass of 109Ag if natural abundance of 107Ag is 51.87% & atomic mass =106.905 amu and determine the probability of particle would be located in the range
How many grams of ammonium sulfate can be produced if 30.0 mol of H2SO4 react with excess NH3 according to the equation 2NH3(aq) + H2SO4(aq) => (NH4)2SO4(aq).
If a 190 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.1*1.0 ft, what is the average thickness of the sheet in meters?
Determine the structure of one active component and identify three functional groups on each molecule. Based on the functional groups present in the drug molecules, predict the physical properties of the molecule the drug would interact
For the following reaction, 5.07 grams of carbon disulfide are mixed with excess chlorine gas. The reaction yields 9.09 grams of carbon tetrachloride.
9.780 grams of gaseous mixture contains ethane ,C2H6 and propane ,C3H8. it needs 1.120mol of oxygen when complete combustion to form CO2 and H2O. Compute the mass percent of C2H6 in the original mixture.
calculate the molarity of an aqueous NaOH solution if 32 mL of it is required to titrate .6789 grams of oxalic acid to a phenolphthalein end point.
The first ionization energy of bismuth is Ei1=+703 KJ/mole. What is the longest possible wavelenghth of light that could ionize an atom of bismuth?
a first order reaction has a rate constant 0.00510.if we begin with 0.10 M concentration of the reactant , how much of the reactant will remain after 3 hrs?
The orbital energy of any atomic species depends on factors other than the principle quantum number n and any given energy level in H is more stable than the same level in H+.
Determine the empirical formula of a hydrocarbon which has 92.24% C and 7.76% H. If 0.500 g of this hydrocarbon occupies 0.086 L at STP, determine the molecular weight of the compound.
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