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The reaction of nickel with concentrated nitric acid, the products are nickel III nitrate, water and nitrogen monoxide, sometimes called nitric oxide. If 250 ml of nitric oxide were collected over mercury at 42C and under a pressure of 745 mm of mercury.
How many grams of nickel had reacted?
What are the roots for x in this quadratic equation? 2 x2 - 7 x + 0.5 = 0 The larger root is (use 3 significant figs) The smaller root is (use 3 significant figs)
Find N-H bond energy in ammonia using the standard enthalpies of formation N(g)=472,7kJ/mol, H(g)=216.0kJ/mol, NH3(g)=-46.1kJ/mol
Calculate the expected change in temperature for 1.7 g of NH NO dissolved in 50.0 2 cal mL of H O. Assume that the calorimeter absorbs no heat. (ie. C =0)(Remember to use dimensional analysis
The standard enthalpy change for the reaction below is -905.4 kJ (for the reaction as written). What is the standard enthalpy of formation of NO(g)
a 12.09-g sample of solid sodium bicarbonate completely decomposes into solid sodium hydroxide and carbon dioxide gas when heated.
the experimental density of nickel under normal conditions of temperature and pressure is 8.908 cm^-3. Predict its crystal structure, and use the experimental density to obtain an experimentally-corrected atomic radius.
What is the hydronium ion concentration of a 0.500 M acetic acid solution with Ka = 1.8 x 10-5? The equation for the dissociation of acetic acid is: CH3CO2H(aq) + H2O(l) H3O+(aq) + CH3CO2-(aq)
Ammonium carbamate (NH2COONH4) is found in the blood and urine of mammals. At a temperature of 424 K, Kc = 0.080 for the following equilibrium:
A 50.0 L cylinder contains nitrogen gas at a pressure of 21.5 atm. The contents of the cylinder are emptied into an evacuated tank of unknown volume. If the final pressure in the tank is 1.55 atm, then what is the volume of the tank
How much heat is released when 50.0 grams of water at 100 degree celcius hits the skin and cools to a body temperature of 37 degree celcius.
An experiment shows that a 248mL gas sample has a mass of 0.433g at a pressure of 745 mmHg and a temperature of 28 degrees C. What is the molar mass of the gas
what is the hybridization of phosphorus in the phosphonium ion (PH4+)
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