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To test the effectiveness of a gunpowder mixture, 1 gram was exploded under controlled STP conditions and the reaction chamber was found to expand to 310 cm3. What volume would these gases occupy at the temperature produced by an uncontrolled explosion (2,200.°C) and 2.1 atmospheres of pressure?
1.013-g sample of ZnSO4•xH2O is dissolved in an aqueous solution of BaCl2. The pure BaSO4 precipitate is filtered out of solution, dried, and its mass is determined to be 0.8223 g. What is the value of x in ZnSO4•xH2O?
What is the expression for the energy difference between the lowest energy state and the first excited state of the benzene Pi system. Please leave your answer in terms of variables and constants; do not substitute.
Formulate a reaction mechanism to show how, with excess acetic anhydride ,2-methyl benzisoxazinone might be formed.(Hint: acetylation of the amino group should occur first). How many moles of acetic anhydride are consumed in this reaction?
Which of the following is TRUE with regards to strong and weak acids? A. weak acids undergo complete dissociation in solution B. strong acids undergo partial dissociation in solution C.
What common structural features or functional groups allow benzoic acid to physically distribute itself between the two layers in Part A (methylene chloride and water)
If solar radiation is 1200 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
at 450degc tert-butyl alcohol decomposes into water and isobutene.ch33cohg ch32cch2g h2oga reaction vessel contains
sodium azide, a compound containing only sodium (Na) and Nitrogen (N), is used as a propellant for inflating airbags in some automobiles. A sample of sodium azide was weighed into a crucible.
The combustion of 45.0 g of methane (natural gas) releases 2498 kJ of heat energy. How much energy in kilocalories kcal would combustion of 0.670oz of methane release.
you reacted 11.5 grams of sodium sulfate and 55.0 ml of 0.500 M barium nitrate, how many grams of barium sulfate are made.
Using the ionic radii Li 76pm, F 133pm, K 138pm, Br 196pm, show that LiF and KBr are consistent with the rule of thumb that the NaCl structure occurs for radius ratios between .414:1 and .732:1 and calculate densities for LiF and KBr.
What is the mass of platinum required to solidify all the gold? What is the change in entropy of the system? Cp(Pt, s) = 25.86J/mol*K ?H?fus(Au, s l) = 12550J/mol
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