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A gas sample contains 7.3 g of CH4 and 3.0 g of He. What is the volume of the sample at STP?
Lithium iodide has a lattice energy of -7.3 times 10^2kJmol and a heat of hydration of -793kj/mol. Find the heat of solution for lithium iodide.
What is the pH of the solution after precipitating the fluoride out of the solution?
A 28.4 g sample of C2H5OH is burned in a calorimetry containing 1.0 kg water. The temperature of the calorimetry and its contents rose from 25.00 Celcius to 29.71 Celsius. Determine the heat involved in the combustion of 1.0 mole of C2H5OH
Describe the expected results of the following tests or reagents on the sphingolipid N-palmitoyl-D-sphingomyelin
Problem- Top fuel dragsters and funny cars burn nitromethane as fuel according to the following balanced combustion equation: 2CH3NO2(l)+3/2O2(g)?2CO2(g)+3H2O(l)+N2(g)
Explain which of the two substances below would you expect to be more soluble in water. Explain. Must mention specific intermolecular forces involved for both substances.
What will be the resultant pressure when the stopcock is opened?
what is the condensed structural formula for 22-dimethyl
What mass of water in grams is contained in 2.9 L of the vapor above this solution at 55 degree C. The vapor pressure of pure water 55 degree C is 118 torr. (Assume a van't Hoff factor of 1.9 for NaCl)
Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added)
at room temperature more of the collisions have sufficient energy to produce a reaction. the piece of zinc needs to be bigger at 4 deg c.
In one trial of the standardization of a Na2S2O3 solution, a 10.00 mL volume of 5.00×10-3 M KIO3 is pipetted into a 250 mL Erlenmeyer flask. The solution is titrated to the endpoint with 15.96 mL of the Na2S2O3 solution. What is the molar concentr..
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