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In the balanced equation, find out the sum of the coefficients? The reaction below occurs in the basic solution. Zn + NO3- --> Zn(OH)4 {2-} + NH3
Calculate the total amount of energy in kcal radiated to the surroundings by an adult in 20.4 hours? An adult person radiates heat to the surroundings at about the same rate as a 100. Watt light bu
Determine the number of tons of dynamite needed to provide the energy of the storm in part (a) when the energy released when one ton of dynamite explodes is 4.2 x 106 kJ.
Estimate the molar weight of the gas? Suppose that in an experiment similar to the determination of the Molar Mass of a Gas, you collect the 0.27 g of a gas in a 276 mL bubble at 30 deg. C and under
Determine the initial rate of the NO reduction at the 1100 K if 400.00 mg of NO and 600.00 mg of H2 are confined to a 5.00 L reaction vessel. The reduction of NO by H2 is first order in each of the
Estimate the number of tons of dynamite required to provide the energy of the storm in part (a) when the energy released when one ton of dynamite explodes is 4.2 x 106 kJ.
Illustrate the Lewis structure for pyrazine (C4H4N2) showing all the resonance forms. With 2 carbons the N atoms in pyrazine are directly opposite each other in the ring between them in either dire
Sketch the Lewis structures of these three compounds, include lone pairs of the electrons, the resonance structures and the formal charges minimized in the Lewis structures.
Determine which element in Group 7A has the lowest electro negativity? Determine which element in Group 1A has the lowest boiling point? Would it be Cs, H, or Fr?
Balance and complete the following redox equation. Determine the coefficient of H2O when the equation is balanced using the set of smallest whole-number coefficients?
At a total air pressure of 2.63 atm and a temperature of 25.0degrees C, find out the solubility of N2 in a diver's blood? Suppose that the composition of the air in the tank is the same
When air is at standard pressure and 25.0 degrees C, the component will dissolve in water with a solubility of4.88x10-4 M. Air is a mixture of gases that is about 78.0 % N2 by volume. Calcul
A sample which is having 150.0-g of a metal at 80.0degrees Celsius is added to the 150.0 g of H2O at 20.0 degrees Celsius. The final temperature of the metal and the water is 23.3 degrees C
The ship heads south at 28 km/h when there is the current of 8km/h from 225 degrees. By how many degrees ships actual course varies from intended course? Illustrate diagram on x/y plane.
The airplane velocity of 640km/h at 250 degrees and the wind velocity of 80km/h from west. Find new speed and in what direction degrees is it heading? Illustrate diagram on x/y plane.
You are riding the bicycle along the level road. Suppose every wheel is 26 inches in diameter, rear sprocket has the radius of 3 inches and front sprocket has the radius of 7 inches.
By definition, pH = -log[H+], where [H+] is hydrogen ion concentration in moles per liter. Several solutions have the pH between 2 and 8. Determine corresponding range of [H+].
Explain what volume of pure O2 collected at the 27 C and 764 torr would be generated by decomposition of 125 grams of a 50% by mass hydrogen peroxide solution?
Determine the energy density of a mixture of C and O atoms in the stoichiometric ration of 1:2? The reaction C + 2O ---> CO2 releases 1,609 kJ for every mole of CO2 that is formed.
Calculate the name of the ester produced when the acetic acid (CH3CO2H) and isopentyl alcohol((CH3)2CHCH2CH2OH ) are mixed together?
Describe the Lewis Structure, including all important resonance forms. Include lone pair electrons on all atoms when the ClO3 does not obey the octet rule.
Your reaction mixture is dissolved in water and ethanol. Determine the temperature at which you expect that a simple mixture of water and ethanol will reach at the time that boiling (and thus reflu
Determine does the presence of dissolved salts (NaOH) affect the temperature at which the boiling of a solvent will be observed? In what way?
Determine the mass of calcium sulphate that form for each kg of SO2 removed from the smokestack? Powered limestone is used to scrub the sulfur dioxide from the flue gas in a coal fired power plant,
What will be the theoretical mass of potassium sulfate created? Suppose you have 35 ml of a 200 mg/l solution of H2SO4 and neutralized it with plenty of dilute KOH (potassium hydroxide).