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When ammonia gas, NH3, is passed over hot liquid sodium metal, hydrogen gas, H2, is released and sodium amide, NaNH2, is formed as a solid product. What is the balancing Equation?
Will a precipitate form if 25.0 ml of a 0.0030 M solution of BaCl2 and and 50.0 ml of a 0.050 solution of NaF are mixed? Is the solution saturated
What is the magnitude of the partial positive and partial negative charges in the HBr molecule? (1D = 3.36 × 10-30 C m; 1e- = 1.6022 × 10-19 C; bond length HBr = 1.41 angstroms; Dipole Moment HBr = 0.82D)
Calculate the fraction of methyl isonitrile molecuules that haven an energy of 80.30 kJ or greater at at 450 k.
what volume of hydrogen at STP is produced from the reaction of 50.0g of Mg and the equivalent of 75g of HCl?
What effect on the calorimeter constant calculated would be observed if the calorimeter cup were made of a conducting material(such as metal)rather than plastic foam
What is the molality of a solution formed by dissolving 1.70 mol of KCl in 15.0 mol of water (MM of water = 18.02 g/mol),
Report each to three significant figures in scientific notation. Given this data for the decomposition of urea in an acidic solution, calculate each of the following assuming Arrhenius behavior.
If the concentration of Mg2+ ion in seawater is 1350 mg/L, what OH- concentration is required to precipitate Mg(OH)2
Write a balanced equation for the reaction. What volume of 0.200M MnO4- solution is needed to titrate 22.5mL of a 0.350M solution of ethanol?
What molar ratio of acetic acid to sodium acetate is required to create a buffer solution having a pH of 4.84 at 25°C
gold-198 is a beta emitter with a half-life of 2.7 days. what percentage of a gold-198 sample remains after 13.5 days?
What is the percentage by mass of CH4 in the mixture. The standard enthalpies of combustion for CH4 and C2H6 are -890.3 kJ mol-1 and -1569.7 kJ mol-1, respectively.
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