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calculate the percentage of empty space in 1 mole of water at 25 c. the volume of a molecule of water can be taken as the sum of the volumes of the two hydrogen atoms and the oxygen atom. use the single bond covalent radii of 37 pm for hydrogen and 66 pm for oxygen.
the Williamson synthesis of the desired ether woudl favor one particular alkoxide ion-alkyl halide combination. Write the chemical equation for the formation of the favored alkyl halide, alkoxide ion, and ether.
Assuming no elasticity forces in rubber, what volume should a 1.0L ballookn at 25 degree Celsius and 1.00 atm pressure be if immerses in liquid nitrogen
Calculate the minimum concentration of Cr3+ that must be added to 0.095 M NaF in order to initiate a precipitate of chromium (III) fluoride. (For CrF3, Ksp = 6.6 x 10-11.)
A 20.94 g sample of an unknown metal is heated to 99.4 C in a hot water bath. The metal is quickly transferred to 100ml of water at 22.0 C in a coffee cup calorimeter.
The following data were obtained for the decomposition of N2O5 in the presence of 1 atm. N2 at 298 K.time (hr.) P(N2O5) atm P(N2O5) P(N2O5) P(N2O5) (for P(N2)=5 P(N2O5) (atm))
Suppose that the solvent ethanol could serve to replace the methanol in this process, but at the expense of double the concentrations of the solvent in the atmosphere.
A combustion devise was used to determine the empirical formula for a compound that only contains C, H, and O. A 0.6349 g sample of the unknown produced
write the equations for two different acid base reactions of diethylamine with water. Indicate the direction of the equlibrium for both reactions. The pKa of diethyl ammonium ion is 10.94.
How many constitutionally isomeric monochlorides are capable of being formed in the free-radical chlorination of 2,4-dimethylpentane
If the partial pressure of a gas produced in a reaction was determined to be 0.35 atm in a 161.0 mL container and at a temperature of 25.0°C, how many moles of gas were produced? (Hint: Use the ideal gas law and convert temperature to Kelvin, volu..
How many MOLECULES of phosphorus triiodide are present in 3.72 moles of this compound
You conbine 16.0g of KO2 with the CO2 in 4.00L tank, in which the gas pressure is 1.24 atm at 23.0C. What is the pressure of the oxygen formed if captured in 2.50L flask at 25.0C
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