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A container contains oxygen, neon and helium whose partial pressures are 100 torr, 300 torr and 200 torr respectively. What is the mole fraction of neon?
Molarity of sodium carbonate, How many grams of primary standard grade sodium carbonate are necessary to prepare 2.00 L
Strontium-90 is present in the fallout produced by nuclear weapons testing in the atmosphere. Sr-90 is potentially dangerous to humans and animals because it substitutes chemically for calcium in bones and has a half-life of almost 29 years.
Determine the empirical formula of each of the following compounds. Type your answer using the format CH4 for CH4 and list the elements in the same order as they are mentioned in the problem.
using a flow diagram show the separation of a mixture containing p-bromoacetanilide
A particular solid has a structure in which W atoms are located at cube corners, O atoms at the centers of the cubic edges, and Na atoms at cube centers. The edge is 3.86 angstroms.
The resulting equilibrium solution has a pH of 10.21. What is the Ksp of the salt at 22 °C?
Consider an infrared grating with 84.0 lines per mm and 15.0 mm of illuminated area. calculate the first-order resolution (λ/Δλ) of this grating. How far apart in cm^-1 must two lines centered at 1200 cm^-1 be if they are to be resolved.
Explain why a solution of one mole of potassiium carbonate in one litter of water has higher boiling point than a solution of one mole of sodium bicarbonate
determine whether or not it is chiral and specify the absoute configuration of any chiral carbons
If C 6 H 12 O 6 yields C 2 H 5 OH+CO 2 then balance this equation and determine what the percent yield for the reaction is if 575.0 grams of C 6 H 12 O 6 glucose yields 126.4mL of C 2 H 5 OH ethanol?
Draw the atomic orbital diagram for the valence electron in Selenium (S) and then indicate the quantum numbers?
An experiment shows that a 115 mL gas sample has a mass of 0.170 g at a pressure of 711 mm Hg and a temperature of 33 Celcius. What is the molar mass?
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