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A 100. mL sample of water is taken from the pacific ocean, and the water is allowed to evaporate. the salts that remain (mostly from NaCl) have a mass of 3.85g. Calculate the original concentration of NaCl, in ppm, in the water sample.
Suppose that a linear Li8 molecule could be formed by combining the 2s orbitals on each atom into delocalized MOs. What is the predicted bond order of the molecule as a whole
The vapor pressure of water at 20.0°C is 17.5mmHg . If the pressure of a gas collected over water was measured to be 453.0mmHg . What is the pressure of the pure gas
Describe the differences in magnitude of the attractive forces in solids, liquids and gases. Describe how these affect the differing properties of these three states.
in the lab you determine the molarity of kmno4 to be 0.08611 m for your first titration and 0.08837 m for your second
A stereoselective reaction is a reaction that yields predominantly or exclusively one stereoisomer when two or more stereoisomers are possible. What reaction is stereospecific but not stereoselective
In a teaspoon (5.0ml ) of a common liquid antacid, there are 150mg Ca(OH)2 and 150mg Al(OH)3 . A 8.3×10-2 M HCL , which is similar to stomach acid, is used to neutralize 5.0 ml of the liquid antacid.
Differentiate between the dfferent bond types of orbital overlap required to obtain a sigma bond and pi bonds
for a certain gas that contains only carbon and hydrogen the masspercentage of carbon is known to be 85.62. it is
Determine the empirical and molecular formulas of anthraquinone.
heat is generated at a volumetric rate of q in a rod of radius r0 and length l. half the cylindrical surface length is
Problem- Which of the following compounds is most soluble in water? 3-pentanone octane 1-butanol methyl propyl ether propane
Calculate the missing value in each problem. a. delta G=?; delta H=-217 kJ/mol; delta S=151 J/mol*K; T=451 K b. delta G= -20.4 kJ/mol; delta H= 107 kJ/mol; delta S= 211 J/mol*K; T
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