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A particular compound contains only C, H, N, and O. When 615 mg of this compound are burned in air, 712 mg of carbon dioxide and 369 mg of water are created. When subjected to kjeldahl analysis,, 299 mg of hydrogen chloride are required to titrate the ammonia formed from a second 615 mg sample. Write the empirical formyula of the compound in the format CwHxNyOz, where the w, x, y, and z are integers.
Neglect the absorption of other waste gas components into the water, and the evaporation of water into the waste gas stream. What rate is NH3 is being removed from the feed gas?
The density of a 23.0% by mass ethylene glycol (C_2 H_6O_2) solution in water is 1.03 g/mL. What is the molarity of the solution?
A 2kg iron bar (c of iron is 440 J.kg .K) is heated to 80 Celsius. The bar is dipped in 5kg of water at 20 Celsius in a heat insulated container. What will be the equilibrium temperature inside the container?
If the average human body discharges 850 g of CO2 per day, how much NaOH is needed each day for each person in the spacecraft? Answer in units of mol.
The heat effect of the neutralization reaction NaOH(aq) + HCl(aq) is measured in an open adiabatic solution calorimeter (not a coffee cup calorimeter) The heat capacity of the calorimeter itself is 456 J/K.
how many grams of solid NaOCl must be added to 50 mL of .14 molar HOCl to obtain a buffer solution with a pH of 7.49.
di ethyl ethal is a volatile, highly inflammable organic liquid that is used mainly as a solvebt. the vapour pressure of di ethyl ethal is 4.01mmHg at 18 degree celcius.
Suppose that you are climbing a high mountain and the oxygen partial pressure in the air is reduced to 75 torr. Estimate the percentage of the oxygen carrying capacity that will be utilized,
What is the NMR spectrum of benzene, Suppose Dewar,Ladenburg,and Kekul?? had had a 13 C NMR spec- trometer.How many signals would the various candidates
Arrange the descriptions in order of increasing number of microstates in the resulting system.
What is the pH of Sodium Acetate solution before the HCL is added and after the HCL is added?
Where does the extra electron come from when determining the formal charge of NH2? N has 5 valence electrons and H each have one which lead to two bonds and one lone pair and one lone electron which equals a formal charge
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