ahmedabudief

Dr. Ahmed Mohammed Abu-Dief Mohammed

Assistant Professor - Assistant professor of Inorganic and Physical Chemistry

Faculty of science

Address: Behind hospital of Sohag University - Ali Ebn Abi Taleb Street

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osmotic pressure
* WHICH OF THE FOLLOWING AQUEOUS SOLUTIONS HAS THE HIGHEST OSMOTIC PRESSURE AT 25°C? * 0.2 M KBr * 0.2 M ethanol * 0.2 M Na2SO4 * 0.2 M KCl Read more

molarity
* AN AQUEOUS SOLUTION OF ETHANOL, C2H5OH, IS 19.00% ETHANOL BY MASS AND HAS A DENSITY OF 0.9700 G ML-1. CALCULATE THE MOLARITY OF THE ETHANOL SOLUTION.AN AQUEOUS SOLUTION OF ETHANOL, C2H5OH, IS 19.00% ETHANOL BY MASS AND HAS A DENSITY OF 0.9700 G ML-1. CALCULATE THE MOLARITY OF THE ETHANOL SOLUTION.AN AQUEOUS SOLUTION OF ETHANOL, C2H5OH, IS 19.00% ETHANOL ... Read more

bonding
* WHICH ONE OF THE FOLLOWING MOLECULES IS LINEAR? * BF3 * CO2 CO2 * H2S * SO2 Read more

Ionic compounds
* FLUORINE MOLECULE F2 HAS .........: FLUORINE MOLECULE F2 HAS .........: FLUORINE MOLECULE F2 HAS .........: * 6 lone pairs of electrons. * 4 lone pairs of electrons. * 8 lone electrons. * Answers (b) and (c). Read more

Expriment3: Melting and boiling points
Write a short notes on melting and boiling points expriment? Read more

Solution1
Calculate the mole fraction of C2H5OH in a solution that contains 46 grams of ethanol, C2H5OH, and 64 grams of methanol, CH3OH.( a) 1/3 (b) 0.42 (c) 1/2 (d) 2/3 (e) none of these Read more

Solution
Calculate the MOLALITY of a solution that contains 51.2 g of naphthalene, C10H8, in 500 mL of carbon tetrachloride. The density of CCl4 is 1.60 g/mL. (a) 0.250 m (b) 0.500 m (c) 0.750 m (d) 0.840 m (e) 1.69 m Read more

Base2
According to the Lewis theory, a base _____ . (a) is a proton acceptor. (b) is a proton donor. (c) makes available a share in a pair of electrons. (d) produces OH- ions in aqueous solution. (e) accepts a share in a pair of electrons. Read more