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A gas sample was collected over water at 25.3 0C. The total pressure is determined to be 0.97 atm. What is the partial pressure of the gas that was collected?
Calculate the bicarbonate and carbonate alkalinities, in mg/L as CaCO3 , of a water having a total alkalinity of 233.0mg/L as CaCO3 and a ph of 10.47?
Fe3O4(s) + 4CO(g) --> 4CO2(g) + 3Fe(s). In this reaction, if 335.2 g Fe3O4 is reacted with excess CO, what mass of CO2 will be produced.
The following data were obtained for the determination of iron in serum by a spectrophotometeic method. Assuming the validity of Beer's Law for the experiment calcualte the concentration of iron in serum
a graduated cylinder reads 4 ml of water.then a shell is dropped into it and the water level rises to 12 ml.what is the volume of the shell?
One of the treatments for gangrene and the bends, is hyperbaric oxygenation. This occurs in a chamber in which oxygen is used at higher-than-normal pressures.
Write out the un-ionized structure of valine & phnylalanine. Do either have enantiomers? Write the zwitterion structures of both.
A voltaic cell employs the following redox reaction: 2Fe3+(aq)+3Mg(s)--> 2Fe(s)+3Mg2+(aq+ Calculate the cell potential at 25 under each of the following conditions.
What is the osmotic pressure of a solution formed by dissolving 44.4mg of aspirin C9H8O4 in 0.355 L of water at 25 degress C.
Calcium sulfide has a face-centered cubic unit cell with calcium ions in octahedral holes. If the radius of sulfide ion is 184pm and the density of CaS is 2.60 g/cm3.
Consider the gas-phase reaction A + 2B 2C + D. Starting with 1.0 mole of A and 1.0 mole of B in 2.0 liter container, the reaction proceeds to equilibrium at T = 103C with 8.6 × 10-2 moles of C now present.
Determine the molar mass of aspartame and How many moles of molecules are in 10.0g of aspartame?
What is the smallest possible integer coefficient of S in the combined balanced equation and compute the final pressure in the tank if nothing else is altered in the surroundings.
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