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Identify all of the substances that are used or produced in this experiment A5. Distinguish between elements and compounds.
what does FU mean in stoichiometry?
If a 180mg piece of gold (density =19.32g/cm^3 ) is hammered into a sheet measuring 2.1ft x 1.0ft , what is the average thickness of the sheet in meters?
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted.
How many liters of O2 are needed to react completely with 45.0L of H2S at STP? 2H2S(g) + 3O2(g) -> 2SO2(g) +2H20(g)
The lead contained in a 0.2000 g sample is precipitated as PbCrO4. The precipitate is filtrated, washed and re-dissolved in acid to give lead ions and dichromate.
Explain the factors that lead to the third mode being such a poor group frequency. Predict the location in the spectrum of the third fundamental.
What mass of ethylene glycol, when mixed with 225 g H2O, will reduce the equilibrium vapor pressure of H2O from 1.00 atm to 0.800 atm at 100 °C?
The burning of sufficient magnesium in oxygen to form 2.00 grams of magnesium oxide results in the liberation of 30.1 kj.
2SO2(g) + O2(g) 2SO3(g) Suppose the volume of this system is compressed to one-half its initial volume and then equilibrium is reestablished.
Iron reacts with chlorine gas as follows: 2 Fe (s) + 3 Cl2 (g) > 2 FeCl3 (s)
What is the energy difference between the two energy levels involved in the emission that results in this spectral line and calculate the frequency (Hz) and wavelength (nm) of the emitted photon when an electron drops from the n=4 to the n=2 level i..
A gas mixture with a total pressure of 750mmHg contains each of the following gases at the indicated partial pressures:CO2 , 133mmHg ; Ar,215mmHg and O2,177mmHg
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