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An electric power station annually burns 3.3 107 kg of coal containing 1.4 percent sulfur by mass. Calculate the volume of SO2 emitted at STP
This solution was back-titrated with a 0.0370 M Ga3 solution until all the EDTA reacted, requiring 11.0 mL of the Ga3 solution. What was the original concentration of the V3 solution?
Hypohalic acid, HOX, is a weak acid with a Ka of 3.341x10-8. What is the pKb for the hypohalite anion, OX-, in a 0.8865 M solution of KOX
A solution is made by mixing 49.0 mL of ethanol, C2H6O, and 51.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20 degrees celcius
Calcium nitrate solution is added to a solution of sodium phosphate
What is the smallest amount of CuO (in moles) that would establish the equilibrium?
Polycyclic aromatic hydrocarbons (PAHs) are a class of organic chemicals associated with the combustion of fossil fuels. Undeveloped areas may have total PAH soil concentrations of 5 µg/kg
the mass density of phosphorus vapour is 0.6388 kg per meter cube. What is the molecular formular of phosphorus under these conditions
For each of the following processes, indicate whether the signs of S and H are expected to be positive, negative, or about zero.
calculate the mass of a sample of gold that occupies 5.0 X 10^-3 cm3 if the density of gold is 19.3 g/cm
Consider the reaction: 2H2S(g)==2H2(G)+S2(g) An equilibrium mixture of this reaction at a certain temperature was found to have = [H2S]=0.602 , [H2]= 3.24×10^?2M , and [S2] = 7.84×10^?3 M. What is the value of the equilibrium constant at this temp..
A mixture of CaCO3 and CaO weighing 0.630 g was heated to produce gaseous CO2. After heating, the remaining solid weighed 0.464 g.
The fragment is dissolved in 50.00 mL of (H_{2}SO_{4}) solution is then treated with 2 g of Kl and 50.00 mL of the potassium iodate solution (1L of 0.01000M solution requires 2.14g of potassium iodate).
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