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what is the mechanism for magnetite precipitation? what is the lewis structure of magnetite?
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The partial molar volumes of water and ethanol in a solution with xH2O = 0.60 at 25 C are 17.0 and 57.0 cm3 mol 1, respectively
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Could you please help with this question as soon as possible what is the molarity of urea, CO(NH2)2, if 98.3mg of the 97.9% pure solid is dissolved in a final volume of 5.00ml
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How much heat does your body lose when 1.4 grams of sweat evaporates from your skin at 25 C ? (Assume that the sweat is only water.) The heat of vaporization of water at 25 C is 44.0 kj/mole.
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When the equation for the complete combustion of ethanol, C2H5OH, to form carbon dioxide and water is balanced with lowest integer coefficients, what is the coefficient for O2?
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100g (water) that increases temperature from -100 degrees Celsius to 200 degrees Celsius. How much energy in a Kilo Joule is absorbed?
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Calcium sulphate reacts with carbon (in the form of graphite) according to the reaction: CaSO4(s) + 1/2C(s, graphite) CaO(s) + SO2(g) + 1/2CO2(g) When 204.2 g of CaSO4(s) reacts with excess graphite at 298.15 K and 1 atm pressure, 456kJ of heat are absorbed. Calculate...
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Assume that a particular reaction evolves 231 kJ of heat and that 36 kJ of PV work is gained by the system.
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fecl3+3naoh yield Fe(OH)3+3NaCl
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N2+3H2-->2NH3 20moles hydrogen react with 40 moles nitrogen how many moles of ammonia
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Sample Questions
- 1. For organic chemistry, what is a concerted shift? How do things like acids or heat affect them? What other factors affect them?
- 2. Which of the following reactions is an acid-base neutralization reaction? Why are the rest of the answers incorrect?
- A. AgNo3 (aq) + NaI (aq) --> AgI (s) + NaNO3 (aq)
- B. S8(s) + 8O2 (g) --> 8SO2(g)
- C. Na3PO4 (s) + 2H2O (l) --> H2 (g) + 2NaOH (aq)
- D. Ca (OH)2 (aq) + 2HI (aq) --> CaI2(aq) + 2H2O (l)
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