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Diethyl ether is a volatile organic compound. The vapor pressure of diethyl ether is 401 mm Hg at 18°C and the Hvap = 26.0 kJ/mol. Calculate the vapor pressure of diethyl ether at 40°C.
401 mm Hg 517 mm Hg 598 mm Hg 605 mm Hg 853 mm Hg
Calculate the molar mass and the molecular formula of the solid. (Ki for diphenl is 8.00'C/m)
An unknown compound burned with a yellow, nonsmoky flame and was found to be insoluble in 5% sodium hydroxide solution but soluble in concentrated sulfuric acid.
Determine the mass of H 2 O in the flask and it's the true volume at 20° C?(at 20°C the Density g/mL=0.9982071,20°C the volume of 1g of water (mL) corrected for buoyancy is 1.0029 )
Complexometric titration and stoichiometry - How many grams of chloride ion were present in sample
It is important to allow each spot added to the chromatography paper to dry completely before adding another spot.
A stock solution is prepared by adding 21 mL of 1 M AlCl3 to enough water to make 76 mL. What is the Cl- concentration of 40 mL of the stock solution?
A lead bullet is fired at a wooden plank. At what speed must bullet travel to melt on impact, if its initial temperature is 25oC and the heating of the plank is neglected.
calculate the volume of air at 30 degrees celcius and 1 atm that is needed to burn completely 10 grams of propane. assume that air is 21 percent oxygen by volume
Given the general formula of a hydrate, Z. nH2O, which variable represents the anhydrous salt? the number of water molecules in each hydrate crystal?
What mass of the hydrate could be recovered from the solution? When separated from a H 2 O solution, copper sulphate forms a hydrate with 5
An aqueous solution is 1.00% NaCl by mass. Its density is 1.071 g/mL at 25°C. The observed osmotic pressure of this solution is 7.83 atm at 25°C.
Rank the following atoms (from smallest to largest) based on which would have the largest second ionization energy?
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