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A coffee cup calorimeter containing 100 ml of H2O is used. The initial temeperature of the calorimeter is 23C. If 2.40 g ofCaCl2 is added to the calorimeter, What will be the final temperature of the solution in the calorimeter? The heat of solution ΔHsoln of CalCl2 is-82.8kJ/mol.
Molecular Formula of a Compound from Percent Composition and Molar Mass, What is the molecular formula of a compund that contains 42.87%carbon, 3.598% hydrogen, 25.00% nitrogen
Working with partition function and entropy what is the ratio of the number of particles in the J= 14 to the J=4 level at a temperature of 1900 K?
three commin lab experiments are shown. in each case describehow the ir spectrum of the product would differ from that
what pressure would be required for helium at 25C to have the same density as carbon dioxide at 25C and 1.00 atm?
SO2 present in air can be analyzed by titraion with permangante ions, as described in the equation:
An optimization from a particular starting structure of a compound C5H10O2 leads to an energy of 25.12 KJ/mol.
what compound was condensed in an adol reaction to produce (2E)-5-methyl-2-(1-methylbutyl)oct-2-enal
How much work is done in kilojoules as a result of the reaction shown. 2.5 atm with a volume of 2L --> 2.5 atm with a volume of 3L
Introduced into a 1.70 L flask is 0.120 mol of PCl5 ; the flask is held at a temperature of 227 C until equilibrium is established. PCl5(g) PCl3(g) + Cl2(g) What is the total pressure of the gases in the flask at this point
How many milliliters of O2 gas at 25 C and 1.00 atm pressure are obtained by the thermal decomposition of 0.470g of KMnO4? The balanced equation for the reaction is:
A man has 50 kg of lipids and eats 1 kg of fish a day, which contains 0.5 ppm of methylmercury. What concentration of methylmercury will his lipids achieve? The number of days methylmercury stays in human lipids is 140 days on average.
Use VSEPR theory to decide which one of the following molecules and ions will definitely have at least one 90º bond angle in it.
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