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Assume a scuba diver is working at a depth where the total pressure is 5.0 atm (about 50 m below the surface). What mole fraction of oxygen is necessary in order for the partial pressure of oxygen in the gas mixture the diver breathes to be 0.27 atm?
Calculate the pH during the titration of 25.1 mL of 0.565 M dimethylamine, (CH3)2NH with 0.170 M HCl after 14.2 mL of the acid have been added. Kb of dimethylamine = 5.4 x 10-4.
Propose a structure for C4H9N, which does not liberate a gas when treated with NaNO2 and HCL, and has IR absorptions at 917, 990, and 1640, as well as an N-H absorption at 3300. The 13C NMR spectrum is as follows
0.25 g of hydrogen chloride HCl is dissolved in water to make 8.0 L of solution. What is the pH of the resulting hydrochloric acid solution?
Predict the order of elution for benzoic acid and methyl orange in normal phase column chromatography using polar SiO2 as the stationary phase. In other words, which compound should come off the column first? The structures of benzoic acid and met..
Consider a saturated solution of calcium fluoride in 0.092 M potassium nitrate. Complete the following tasks, and then answer the question. a) Write the chemical equation corresponding to Ksp.
A certain metal crystallizes in a body-centered cubic arrangement. If it rearranges to a face-centered cubic structure, what will happen to the density of the metal
the rate constant for a certain reaction is k 5.40times10-3 . if the initial reactant concentration was 0.250 what
A compound has an empirical formula of CH2Br and vapor density of 6.00 g/L at 375K and .983 atm. Determine molar mass of compound
derive the rate equation for the formation of the double helix and express the observed rate constant
How many mole of sodium hydroxide is contained in a lye solution in which 130 grams of sodium hydroxide
A copper zincs voltaic cell is constructed using 100 ml solutions if 1 M solutions of copper sulfate and zincs sulfate with a sodium sulfate salt Bruges.
An average adult inhales a volume of 0.50 l of air with each breath. if the air is warmed from room temperature (20c) to body temperature (37c) while in the lungs.
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