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How many H- ions are around each Na+ ion in NaH, which has a cubic unit cell with H- ions on each corner and each face
Dicarbonyl compounds, such as benzil, can be characterized by reaction with o-phenylenediamine to form a substituted quinoxaline.
A gas mixture with a total pressure of 765 contains each of the following gases at the indicated partial pressures: , 118 ; , 229 ; and , 187 . The mixture also contains helium gas. What is the partial pressure of helium gas.
What is the hybridization of the nitrogen atom in sulfathiazole? Assuming that the sulfur atom is sp2-hybridized, how many -electrons are there in the sulfathiazole ring?
A 68-g ice cube at 0°C is placed in 680 g of water at 22°C. What is the final temperature of the mixture?
Assume ideal gas behavior and that the heat capacity is not temperature dependent
Naproxen belongs to a class of pahrmaceuticals, the (S)-(+)-enantiomer is the desired pharmacological activity while the (R)-(-) -enantiomer is potentially a liver toxin. Due to this, commercial Naproxen is sold as the S-(+)-enantimoer with high l..
At 25 degrees celsius and 750 mm Hg, 1.05 g of this gas occupies a volume of 0.500 L. What is the molecular formula of the gas?
water expands when it freezes. How much work is done by 100g of water expanding as it freezes at 0 degrees Celsius and pushes back the wall of a pipe that exerts 1070 atm of pressure?
At 25ºC the solubility product constant, Ksp, for magnesium phosphate, Mg3(PO4)2, is 1.0´10-24. The solubility product constant for magnesium fluoride, MgF2, is 7.0´10-11.
What is the boiling point (in ?C) of each of the solutions below? For water, Kb = 0.51(?C ? kg)/mol. The vapor pressure of water at 45.0?C is 71.93mm Hg.
The fatty acid esters of glycerol in #1 undergo SAPONIFICATION when treated with aqueous NaOH to form soap. From the structure of fatty acid esters of glycerol that you wrote earlier, write the structure of the corresponding soap.
Using a sample of gas has a mass of 38.7mg. Calculate the molar mass if its volume is 228mL at a temperature of 57°C and a pressure of 832torr?
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