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A chemist prepares a solution of potassium iodide by measuring out 220. x 10^-6 mols of potassium iodide into a 350 mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's potassium iodide solution. Round your answer to 3 significant digits.
Exactly 150mL of 0.13M HNO2 is titrated with 100mL of 0.13 M NaOH. What is the pH at the endpoint.
Carbon NMR has only the following peaks: 29.8, 36.1 and 206.8 ppm. Propose a structure of this compound and explain splitting pattern and the ratio
A sealed container holding 0.0255 L of an ideal gas at 0.999 atm and 67C is placed into a refrigerator and cooled to 45C with no change in volume. Calculate the final pressure of the gas.
(R)-(3-Chloro-2-methylpropyl) methyl ether (A) on reaction with azide ion (N3-) in aqueous ethanol gives (S)-(3-azido-2-methylpropyl) methyl ether (B). Compound A has the structure ClCH2CH(CH3)CH2OCH3. Draw the wedge-dash, wedge-line formula for A..
approximately how many grams of NH4Cl will dissolve in 100g of H2O at 70 C?
Dry air is 78% nitrogen gas, 21% oxygen gas, and 0.9% argon gas. These gases can be separated by distillation after the air is first converted to a liquid. In one of the steps in this process, filtered air is compressed enough to increase the pres..
A gaseous compound containing carbon and hydrogen was analyzed and found to consist of 83.65% carbon by mass. What is the empirical formula of this compound
A hydrogen atom with its electron in the n=3 energy level absorbs light with a wavelength of 1879 nm. the final energy level of the electron is
determine how hot should be the air in a ballon be heated ifnbsp it has initially a volume of 750. l atnbsp the
Show the complete hydration reaction for 3-octane. Use the condensed structural to show reactants
In the conversion of 2,3-epoxygeraniol to 2,3-epoxygeraniol acetate using DMAP and acetic anhydride, why would a low yield be obtained
An environmental chemist obtained a 200 mL sample of lake water believed to be cntaminated with a single monoprotic strong acid.
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