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A 0.0989 g sample of an alcohol is burn in oxygen to yield 0.2160 g Co2 and 0.1194 g H2o. Calculate the mass percentage of C, H, and O in the compound Sodium tetrathionate is formed when sodium thiosulfate reacts with iodine. Its composition is 17.01% Na, 47.46% S and 35.52% O by mass. Determine its empirical formula. If the Molar mass of sodium tetrathionate is 272. What is its actual formula? Na2S2O3 + I = NaxSx + 2Nal
A 388 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 640. mmHg. Calculate the moles of Ar present.
if 50L of Argon and Helium are mixed at STP then What is the ratio of molecules of Argon to molecules of Helium in the gaseous mixture?
Pipette 10 mL of Reaction Mixture 1 into a 50 mL beaker. Pipette 1 mL of the KMnO4 into the Reaction Mixture, starting the stopwatch immediately.
If the formula for magnesium fluoride is MgF 2 and the formula for potassium chlorate is KClO 3 , then what is the formula for magnesium chlorate?
Present a reaction mechanism for the sodium iodide in acetone test which explains the relative rate of reactivity of 1°, 2°, and 3° halides.
What would be the product if D2O were added to a Grignard reagent such as phenylmagnesium bromide? Is this type of product in Grignard
Determine the mass of ice that has melted. Assume that the heat capacity of the cup can be ignored. It takes 334 J to melt 1.00 g of ice at 0 c.
Predict the sign of the entropy change for the following reactions and tell whether the reactions are spontaneous or nonspontaneous. a. C8H16 (g) + H2(g) ? C8H18 (g) b. C2H5OH (l) + 3O2(g)? 2CO2 (g) + 3H2O (g)
Carbonate buffers are significant in regulating PH of blood at 7.40. Calculate the concentration of Carbon dioxide in a 0.200M NaHCO3 at PH=7.40.
Explain why the H-H distances determined for coordinated dihydrogen by X-ray diffraction are always significantly shorter than
Calculate the standard enthalpy of combustion. The standard enthalpy of formation of palmitic acid - 208kJ/mol
A noble gas with a mass of 13.1 g occupies a 2.5 L container at a pressure of 3.2 atm at 298 K. What is the identity of the noble gas
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