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A miniature volanco can be made in the laboratory with ammonium dichromate. When ignited, it decomposes in a fiery display. (NH4)2Cr2O7(s) ? N2(g) + 4 H2O(g) + Cr2O3(s) If 0.95 g of ammonium dichromate is used and the gases from this reaction are trapped in a 15.0 L flask at 23 °C, what is the total pressure of the gas in the flask? What are the partial pressures of N2 and H2O?
Draw a flame ionization detector FID using the following parts: column, flame, hydrogen, air, electrode, current meter
The vapor pressure of pure water at 25C is 23.8 torr. A solution is made by mixing 18.52g of an unknown non-ionic substance into 200.00g of water and the vapor pressure of the solution is found to be 23.3 torr. What is the molecular weight of the ..
The coinage metals-copper, silver, and gold-crystallize in a cubic closest packed structure. Use the density of copper (8.95g/cm3) and its molar mass
What is the recommended daily allowance (RDA) of calcium, in mg, assuming a 2000 calorie diet for a 25 year old adult? A student carries out part 1 of this experiment and finds the equation for his/her calibration curve to be
Determine the molar concentration of chloride ions after adding 225 ml of 0.625 MKCL with 615 ml of 0.385M MgCl2 if final volume of the solution is 840ml.
What mass of Mg is formed by passing a current of 5.50 A through molten MgCl2 for 2.80 days?
Use the initial volume of acetic acid, the volume of NaOH required to reach the equivalence point and the value of the molarity of NaOH that you obtained when you standardized this solution against KHP in the strong-acid/strong-base experiment to ..
What organic product would be formed upon treatment of dl-stilbene dibromide with NaI in acetone? How could you prove that this product if formed?
For each alkene, indicate the direction of the dipole moment. For each pair, determine which compound has the larger dipole moment. a) cis-1,2-difluoroethene and trans-1,2-difluorothene
A container is filled with CO2(g) and heated to 1000K. The gas pressure at this temperature is 0.50 atm. Graphite (C) is then added to the container and some of the CO2 is converted to CO according to the reaction below
Choose the answer which presents the chemical formulas for two substances in order of decreasing melting point (highest melting point first) and gives a valid reason for this order.
along with the weight of sodium acetate (4.01g) and the volume of acetic acid used (10mL) to prepare the buffer, the expected pH of it was 5.43. What is the expected pH of buffer plus added HCl?
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