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Nitrogen and oxygen form an extensive series of at least seven oxides with the general formula NxOy. One of them is a blue solid that comes apart, reversibly, in the gas phase. It contains 36.84% N. What is the empirical formula of the oxide?
What is the charge associated with each side of the HI molecule? Express your answer in Coulombs to three significant figures.
The resulting solution freezes at 26.5 oC. If Kf for the solvent is 1.74 o C/m then determine the molar mass of the nonelectrolyte compound?
You have weighed out 520 mg of methyl oleate. Knowing that the sample you received only contains 70 % of methyl oleate, how many mmole of methyl oleate did you weigh out
An organic pesticide (MW 183.7) is 8.43% Cl. A 0.627 g sample containing the pesticide plus inert material containing no chloride was decomposed with metallic sodium in alcohol.
The heat of fusion of water is 334 J/g, and the specific heat of water is 4.18 j/g degrees C. How many joules of heat are released when 20.0 g of water at 30.degrees C is cooled to 0.0 degrees C and frozen to ice at 0.0 degrees C.
How much heat is needed to warm 250 g of water from 22 C to 98 C? The specific heat of water is 4.18 J/g . Be sure to include units but do not use scientific notation.
The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione... better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood.
Provide the FULL mechanisms for the reaction of these three alcohols : 1) 1- butanol 2) 2-butanol and 3) 2-methy-2 propanol with a Lucas reagent
Solid sodium peroxide (Na2O2) reacts with liquid water yielding aqueous sodium hydroxide and oxygen gas. How much heat is released
A 6.38 mg sample of potassium hydrogen phthalate was dissolved in 50 mL of water and to use as a standardizing aging. If 36.5 mL of NaOH was required to reach the end point, what is the concentration of the solution in uM?
using the equation for the line of best-fit below y1.544x 0.104 r20.9926determine the molar concentration of an
a half-life for the disappearance of dinitrogen pentoxide of 5130 s. Suppose 0.450 atm of N2O5 is introducted into an evacuated 2.00 L flask. What will be the total gas pressure inside the flask after 3.00 hours
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