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Radiochemical techniques are useful in estimating the solubility product of many compounds. In one experiment, 50.0 mL of a 0.010 M AgNO3 solution containing a silver isotope with a radioactivity of 74025 counts per min per mL were mixed with 100 mL of a 0.030 M NaIO3 solution. The mixed solution was diluted to 500 mL and filtered to remove all of the AgIO3 precipitate. The remaining solution was found to have a radioactivity of 44.4 counts per min per mL. What is the Ksp of AgIO3?
A compound is 40.0 , 6.70 , and 53.3 by mass. Assume that we have a 100.- sample of this compound.The molecular formula mass of this compound is 180 . What are the subscripts in the actual molecular formula?
Use the molar volume of a gas at STP to determine the volume (in {rm L}) occupied by 15.0 {rm g} of neon at STP.
The absence of an alkene C=C IR stretch is definitive evidence that a compound lacks an alkene functional group.
The heat of neutralization of HCl by NaOH is H°rxn = -56.2 kJ/mol. How much heat is released when 125 mL of 1.750 M HCl is mixed with 195 mL of 0.667 M NaOH.
Consider the reaction NO + O3 → NO2 + O2 Which has a rate constant given by k = 1.8×10-12 e-1370/T cm3 molecules-1 s-1 .Use the following standard heats of formation.
Calculate the molar mass of a vapor that has a density of 1.88 g/L at 25.2 oC and 710. mmHg.
Glucose is pumped into some animal cells by a symporter powered by simultaneous entry of Na+. The entry of Na+ provides a free-energy input of 10.8 kJ/mol under typical cellular conditions (external [Na+] = 143 mM, internal [Na+] =14 mM
What is the wavelength of a light ray if its frequency is 4.64 x 1014 s-1? answer in units of nanometers (nm).
Calculate the mole fraction of the salt in the solution.
A sample of 255mg of neon occupies 3.00dm3 at 122K. Use the perfect gas law to calculate the pressure of the gas.
Calculate the heat of reaction for the same reaction where water is a gaseous product instead of a liquid.
The half-life for the radioactive decay of [U]-238 is 4.5 billion years and is independent of initial concentration.
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