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Describe, in detail, how you would separate a mixture of ammonium chloride, NaCl, and sand. Will you be using chemical methods? Explain.
carbon tetrachloride is a useful solvent for both IR absorption and Raman spectroscopy because it has few vibrational modes
Many gases are shipped in high-pressure containers. Consider a steel tank whose volume is 65.0L and which contains O2 gas at a pressure of 16,500kPa at 23°C.
determine at what pressure will pure H 2 O start to boil if its temperature is seventy five degree Celsius
Calculate the ph of a buffer that contains 1.0 M acetic acid and 1.0 M sodium acetate. (ka=1.8x10^-5)
Concentrated hydrochloric acid, HCl, has a composition of 37.5 %. The solutes molar mass is 36.461 g/mol. You may assume the molar mass of water is 18.015g/mol.
Which of the seven Anions will be the hardest to detect (same anions as above), Why do you think this? If two or more are possible explain why.
What mass of the hydrate could be recovered from the solution? When separated from a H 2 O solution, copper sulphate forms a hydrate with 5
Calculate ?G°rx (in kJ) at 582.77 K for this reaction. Report your answer to two decimal places in standard notation (i.e. 123.45 kJ).
Calculate the wavelength of the n=4 to n=1 and the n=4 to n=3 transitions. Indicate in which regions of the electromagnetic spectrum these transitions would occur.
A compound contains only C, H, and O. To analyze the compound, you determine its empirical formula by analysis for C and H, and its molar mass by freezing point depression. (a) What is the empirical formula if a 0.01510 g sample gives 0.01102 g of..
NH3 reacts with BF3 to form an additional compound, H3NBF3. What is the geometry around the nitrogen and boron centers in the additional compound?
The volume of a sample of gas, initially at 25oC, increase from 158 ml to 450 ml. What is the final temperature (C) if the pressure in the container is kept constant.
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