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150g sample of a pure compound subjected to catalytic hydrogenation takes up 25.0mL of H2 at 25 degrees Celsius and 1atm pressure. Compute the molecular weight of the compound presume that it has only one double bond.
Two 26.0 ml samples, one 0.100 M HCl and the other 0.100 M HF, were titrated with 0.200 M KOH. What is the volume of added base at the equivalence point for HCl. What is the volume of added base at the equivalence point for HF
Ammonia gas is produced by reacting hydrogen gas with nitrogen gas. To produce 450 g of ammonia gas using air as your source of nitrogen gas, what volume of air is required if the air is introduced at 25°C and 740 mmHg
Calculate the concentration of a red dye solution with an absorbance of 0.617. If you have 5.78ml of the solution how many mg of red dye are found in the solution.
a compound called pyrene has the empirical formula c8h5 . when 4.04 g of pyrene is dissolved in 10.00 g of benzene the
A flask of water is connected to a powerful vacuum pump. when the pump is turn on, the water begin to boil. after a few minutes, the same water begins to freeze. eventually, it dissapears. explain what happens at each step
Balance the following equations for both mass and charge. a. C3H8O (l) + O2 (g) ? CO2 (g) + H2O (l) b. K2S (aq) + Ni(NO3)2 (aq) ? KNO3 (aq) + NiS (s) c.
the density of a certain aqueous solution is 1.17gml and the solution is 3.57 by mass naoh. how many ml of this
The gas is heated to 675. K at a constant external pressure of 1.00 bar. b. The gas is heated to 675. K at a constant volume corresponding to the initial volume. c. The gas undergoes a reversible isothermal expansion at 310. K until the pressure i..
What effect does the reduction of atmospheric pressure have on the boiling point. Can cyclohexane and toluene be separated if the external pressure is 350 mm Hg instead of 760mm Hg
Draw the structures of each of the following compounds. Determine the number of chirality centers, indicating them in each structures. Also calculate the number of possible stereoisomers for the compound.
A 10.60 mL sample of sulfuric acid from an automobile battery requires 34.32 mL of 2.01 M sodium hydroxide solution for complete neutralization. What is the molarity of the sulfuric acid? Sulfuric acid contains two acidic hydrogens.
If the pH of a solution is more than the pKa of an acid dissolved in it, is more of the acid in the protonated form or deprotonaqted form
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