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Fill in the lines for the orbital/arrow diagram for the valence electrons of the Dyprosium atom, including labeling the n, l and ml values and the individual orbitals that are known?
Why ammonium ion is NOT classified as a Bronsted-Lowry base? 2.Why sulfur hexafluoride DOES NOT obey the octet rule?
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?
A gas sample containing 1.60 mol at 25°C exerts a pressure of 391 torr. Some gas is added to the same container, and the temperature is increased to 50.°C. If the pressure increases to 800. torr, how many moles of gas were added to the container? ..
What is the fraction of association (?) for the following potassium propionate solutions? Ignore activities. The Ka of propanoic acid is 1.34 x 10-5.
The mole fraction of gas A in a mixture is 0.48. If the total pressure of the container is 2.0 atm, what is the partial pressure of gas A?
A student calibrates his/her calorimeter. S/he performs part 1 as instructed. The data are: 99.4 g water at 36.0°C are added to 98.0 g water in the calorimeter at 16.0°C.
What is the freezing point of a solution prepared from 50.0 g ethylene glycol (C2H6O2) and 85.0 g H2O? Kf of water is 1.86°C/m. A) 17.6°C B) -176°C C) -1.50°C D) 1.50°C E) -17.6°C
If 10.00 mL of 0.050M KI solution is mixed with 40.00 mL of other reagents what would be diluted concentration of KI
A mixture consisting of 50 grams ethanol and 50 grams water is distilled using an efficient column. How much water will remain in the distillation flask the instant all of the azeotrope has distilled?
A gas has a volume of 50.0 cm3 at a temperature of -73 C. What volume would the gas occupy at a temperature of -123 C if the pressure stays constant?
The Ka value for boric acid is 5.8* 10^{-10}. What is the pH of an aqueous eye wash solution that is 1.3% boric acid by mass? Assume the density of the solution is the same as that of water.
What minimum volume of sulfur dioxide at STP would be necessary to produce 82.5 kg of sulfur?
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