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Biphenyl is an organic compound that melts at 68.50?C and has a Kfp = 8.00?C/m. If 30.0 mg of lysine and 1.200g of biphenyl has an observed freezing point of 66.13?C, what is the molecular mass of lysine
Vitamin C is helpful in the absorption of what mineral (metal) when the two are present in the gut simultaneously?
A 2.154 g sample of HgO produces 125 mL of oxygen gas. The gas is collected over water at 24 C and an atmospheric pressure of 763 torr.
Explain the difference between equivalence point and end point... Explain how the pH at the equivalence point varies as the strength of the acid increases.
a 2.00 kg sample of pure water at 20.0 degree celsius absorbs 3.53 kJ of heat. What is the final temperature of the water?
When 8.6 g of toluene is mixed with 9 g of pure nitric acid, only 6.7 g of trinitrotoluene (TNT) is recovered from the mixture when it is separated from other undesired byproducts. What is the percent yield of the synthesis? C7H8 + 3 HNO3(l) ? C7H..
How many grams of CH3OH must be added to water to prepare 150 mL of a solution that is 2.0 M CH3OH?
Compute the work done when 55.0 grams of tin mixes in excess acid at the pressure of 1.00 atm and at a temperature of 24°C.
For the strong base solution 4.0×10?3 M Ca(OH)_2, determine [OH^-], [H_3O^+], pH, and pOH.
find the molarity of an unknown NaOH solution if 0.5536 g of the KHP required 37.00 mL of a NaOH solution.
What is the molar solubility of SrSO4 in pure water at 25ºC?
Example: Determine the solubility of calcium fluoride at 25C. And Be sure to note the difference between Solubility and Solubility Product Constant ! What could we do to change the system and produce a precipitate?
Assume that the aluminum atoms can be represented as spheres, as shown in the drawing (Part C figure) . If each {rm Al} atom has a radius of 1.43 {rm AA}, what is the length of a side of the unit cell?
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