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4FEs2(s) + 11O2(g) 2FE2O3(g) + 8SO2(g)
The conversion of FeS2(s) to Fe2O3(s) is only 80% complete. If the standard heat of rxn for the rxn is calculated to be -567.4 kJ/g mol FeS2(s) what is the value of Delta Hrxn will you use per kg of FeS2 burned in an energy balance?
There is a titration of 25.00 mL. The equevalence point is reached after 18.50 mL of 0.171 M HCl has been added . What is the initial concentration of ammonia in the solution? what is the pH of the solution at the equivalence point
if molarity of a 2000ml solution is 4.0M NaCl, how many moles of NaCl are dissolved in that solution.
How many grams of CaCO3 will dissolve in 2.8 multiplied by 102 mL of 0.050 M Ca(NO3)2? Calculate the molar solubility of AgCl in a solution made by dissolving 10.0 g of CaCl2 in 4.50 L of solution.
How many coulombs are required?
Predict whether each of the following oxides is acidic, basic, amphoteric, or neutral: CO2, NO2, Al2O3, CaO.
Assuming that a neutron star has the same density as a neutron, calculate the mass (in ) of a small piece of a neutron star the size of a spherical pebble with a radius of 0.14.
When M2S3(s) is heated in air, it is converted to MO2(s). A 3.700-g sample of M2S3(s) shows a decrease in mass of 0.207 g when it is heated in air.
How many lone pairs of electrons are there in a molecule of crotononitrile?
If 2 x 10-4 moles of S2O8 ^2- in 50 mL of solution is consumed in 188 seconds, what is the rate of consumption of S2O8^2-?
Determine the standard reaction enthalpy for the partial combustion of methane to carbon monoxide according to the following reaction:
Given that the rate constant is 4.0×10-4 at 25.0 degrees C and that the rate constant is 2.6×10-3 at 42.4 degrees C, what is the activation energy in kilojoules per mole?
A solution is made by dissolving 0.679 mol of nonelectrolyte solute in 871 g of benzene. Calculate the freezing point and boiling point of the solution.
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