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1a.What steps can you take to determine the melting point of a sublimes before it melts?1b. Two substances, A and B, have the same melting point.How can you determine if they are the same without using any form of spectroscopy? Explain in details.
when the cations Na+ K+ Cs+ are combined with chloride ion in the gas phase to form ion pairs, which pair formation releases the greatest amount of energy? KCL or RbCl, or NaCl or CsCl.
how many grams of carbon dioxide are produced when 2.50g of sodium hydrogen carbnate reacts with excess citric acid according to the equation: 3NaHCO3 + H3C6H5O7 -> Na3C6H5O7 + 3CO2 + 3H2O.
What is the probability of populating the first excited vibrational state (n = 1) at 298 K? Does isotopic substitution affect the probability? Would the intensity of absorption peaks be affected by isotopic substitution?
During the saponification of ethyl tetradecanoate, would you expect the product to generate foam/froth when mixed
Predict what would appear in the solution if NAOH has been added to the CuSO4 solution instead of the NH3.
An X-ray photon of wavelength 0.976 strikes a surface. The emitted electron has a kinetic energy of 958 eV. What is the binding energy of the electron in?
A solution is .855% HNO3 by mass. Density of the solution is 1.01 g/mL. Find [H+], [OH-], and pH.
How many mL of each solution should be diluted to 500 mL to make 0.100 M reagent?
In the formula for sodium phosphate (Na3PO4) how many moles of sodium are represented? How many moles of phosphorus? how many moles of oxygen?
A 2.154-g sample of HgO produces 125 mL of oxygen collected over water at 24 degrees C and an atmospheric pressure of 763 mm Hg. Calculate the STP molar volume for oxygen.
For the reaction given below at 700°C, Kc = 0.534. H2(g) + CO2(g) reverse reaction arrow H2O(g) + CO(g) Calculate the number of moles of H2 that are present at equilibrium
If a 1.67 g piece of gold is hammered into a sheet whose area is 49.2 ft2, what is the average thickness of the sheet?
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