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A compound with empirical formula C2H2N dissolved its 0.0800 gram in 10.00 g of C6H6, freezing point of resulting solution= 4.99 degree celsius , C6H6 freezes at 5.48 degree celsius, freezing point depression constant kf for benzene = 4.90oC/m. determine What is the molecular formula of this compound?
Barium chromate dissolved upon treatment with nitric acid forming an orange solution. Write a net ionic equation to represent the overall reaction that occurs.
Differentiate between alkenes and alkynes, cis isomers and trans isomers. Describe how cis- trans isomers
If 31.82 g of a metal oxide reacted with excess carbon and 4.08 L of CO2 formed at 100 C and 1.5 atm what is the identity of the metal
Calculate the vapor pressure of a solution prepared by dissolving 0.75 mol of safrole in 950 g of ethanol (46.07 g/mol)
determine what volume of 3.00m hcl in liters is required to react completely with 0.500l of 0.200m na2co3?a gas sample
The enthalpy for oxidation of diamond by oxygen to carbon dioxide is -395.4 kJ/mol but the enthalpy for oxidation of graphite to carbon dioxide is -393.4 kJ/mol. Find the enthalpy of reaction for graphite going to diamond.
How many metric tons (t) of oxygen are combined in a sample of pitchblende that contains 2.5 t of uranium? Analysis shows that 84.2 g of pitchblende contains
Explain why it is preferable to take the geometric mean rather than the arithmetic mean when defining mean activity
What is the molecular weight of thiopene, if 0.74 g of thiopene occupies a volume of 270 mL at 760 mmHg and 100 degrees C?
suppose you have 10 ml of 0.10m sucrose solution. you add 90 ml of water to the solution.Do the number of sucrose change? Does the molarity change?
a 2.2 g sample of an unknown acid with an empirical formula of c3h4o3 is dissolved in 1 l of water. it requires a 25 ml
What molar ratio of benzoate ion to benzoic acid would be required to prepare a buffer with a pH of 5.20? [Ka(C6H5COOH) = 6.5 * 10-5]
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