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What is the initial concentration (in M) when 17.6 mL of a sodium chloride solution was diluted with 19.4 mL of solvent to a final concentration of 0.708 M? Assume the volumes are additive.
The vapor pressure of ethanol is 60.1 torr at 25.0 degree C, and its molar heat of vaporization is 39.3kj/mol. Estimate the temperature at which the vapor pressure of ethanol would equal 350. torr?
What method will you utilize to remove the organic liquid from the naphthalene? What is the name of the organic liquid being removedand why does this method work?
Calculate the number of moles of ammonia absorbed by a boric acid solution if 3.25 ml of 0.0025 M H2SO4 were needed to titrate the solution to the end point ( Assume both hydrogens of the sulfuric acid react.)
If the groundwater at the top of the saturated zone is in equilibrium with air, calculate the concentration of m-Xylene in the air in mol/L
When X rays of wavelength 0.096 nm are diffracted by a metallic crystal, the angle of first-order diffraction (n = 1) is measured to be 15.2°. What is the distance between the layers of atoms responsible for the diffraction?
A graduated cylinder contains 145mL of water. A 10.0g piece of iron (density = 7.86g/cm3 ) and a 22.0g piece of lead are added.
Assume that the partition coefficient, K, for partitioning of compound A between diethyl ether and water is 3; that is, A preferentially partitions into ether.
Measurements also show that a certain sample of the unknown compound contains 6.9 mol of oxygen and 2.32 of chromium
How do I calculate Apparent volume of dry sand and Actual volume occupied by sand particles Using the data below? Also need to know how to calculate the density of sand(based on apparent volume) Mass of graduated cylinder + Table Sand = 26.1g Mass..
To produce 225 moles of tetraphosphorus decoxide how many moles of oxygen are required?
a 70g piece of ice at 0c is added to a sample of water at 6c, all of the ice melts and the temp of the water decreases to 0c, how many grams of water were in the sample?
Calculate the degree of unsaturation number of missing H2 units relative to an alkane for the Compound with the molecular formula C 16 H13 N2 O CI Enter your response as an integer number
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