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A compound of carbon, hydrogen and nitrogen was analyzed and found to contain 46.62 % C, 12.20 % H, 41.18 % N by mass. What is the empirical formula of the compound?
Question- What are some of the possible uses of paper chromatography and other similar types of chromatography such as thin layer chromatography. Select all that apply.
If the height of the candes in the container increases at the rate of 0.270 cm/s, at what rate (kilograms per minute) does the mass of the candies in the container increase?
The solubility product of calcium fluoride (CaF2) is 3.45 X 10^-11 at 25 degrees C. Will a fluoride concentration of 1.0 mg/L be soluble in a water containing 200mg/L of calcium
Explain why do you get 2 peaks instead of 3 for the 3-bromopentane nmr spectra after a sn2 reaction of 2-pentanol with HBr and H2SO4
Explain how you would prepare 500.0mL of a solution that is 0.100M H2SO4 from concentrated 18.0M H2SO4, which is a liquid density 1.82 g/mL.
Problem- Draw stereochemical projections for the products of bromine addition to maleic acid and fumaric acid (cis and trans HOOCCH=CHCOOH, respectively) assuming that bromine adds to these compounds the same way it does to cinnamic acid.
What % conversion is required to attain a number average molar mass (Mn) of 15,000 g/mol? What is the dispersity of this sample?
If an acid base reaction produces a solution with a pH of 7 at its equivalence point, why does an indicator solution that changes color at either a pH of 5 of 9 work just as well as one that changes at a pH of 7
A solution of 75.0 g of benzene (C6H6) and 75.0 g of toluene (C7H8) has a total vapor pressure of 80.9 mmHg at 303 K. Another solution of 100.0 g benzene and 50.0 g toluene has a total vapor pressure of 93.9 mmHg at this temperature.
at 60 degrees c the vapor pressure of pure benzene is 388mmhg and that of pure toluene is 137mmhg. calculate the mole
List all the ionic species present (before any reaction occurs) when the following solutions are mixed together
At equilibrium the pressure of NH3 (g) is 1.23 atm. NH4Cl (s) ---> NH3 (g) + HCl (g) Find the equilibrium constant Ka for the reaction
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