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292.5 g of NaCl completely dissolves (producing Na+ and Cl-) ions in 1.00 kg of water at 25.0 Degrees celsius. The vapor pressure of pure water at this temperature is 23.8 torr. Determine the vapor pressure of this solution
Calculate the partial pressure of each gas and the total pressure after the valve between the flasks is opened. P(He) in mmHg P(Ar) in mm Hg Ptotal in mm Hg
A 0.100 M sample of NiSO4 gave an absorbance of 0.60 at 600 nm in a 1 cm cuvette. What is the nickel concentration of a solution giving an absorbance of 0.20 in the same cuvetter at the ame wavelength
Ammonia is produced by the Haber process, in which nitrogen and hydrogen are reacted directly using an iron mesh impregnated with oxides as a catalyst. For the reaction
what is the theoretical yield of hydrogen gas when 12.5g of sodium metal reacts with an excess of water while also
The thallium (present as Tl2SO4) in a 6.05-g pesticide sample was precipitated as thallium(I)iodide. Calculate the mass percent of Tl2SO4 in the sample if 0.235g of TlI was recovered.
In glycogen degradation, what enzyme is responsible for releasing a glucose molecule attached to the main glucose chain at a branch point
Determine what mass of titanium displaces 65.6mL of H 2 O at the temperature 25 degree Celsius if the density of titanium metal is 4.51 g/cm 3 at the temperature of 25 ° C .?
When the band relaxes, the chains return to a tangled state. what happens to the entropy of the band when a stretched band relaxes
Compute the weight in grams of a double-helical DNA molecule stretching from the earth to the moon (˜320,000 km). The DNA double helix weighs about 1 x 10-18g per 1,000 nucleotide pairs each base pair extends 3.4 angstrom.
Incandescent white of a fireworks display is caused by the formation of P4O10, which occurs by the combustion of phosphorus, how many moles of P are necessary to combine with 0.114 moles of O2
What is the concentration of hydrogen ions in a solution containing 0.39 M HOCN(cyanic acid) and 0.726 M (NaOCN) (sodium shiu (ys6479) - Acid Base Buffers - dungan - (00533434) 3 cyanate).
A solution is made that is 1.2×10-3M inZn(NO3)2 and 0.170M inNH3.After the solution reaches equilibrium, what concentration ofZn2+(aq) remains?
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