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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
Find vertex of quadratic function -6x2+24x-865 Is this parabola fatter or thinner than y=x2 Is given parabola opening upwards or downwards?
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.
The area is 40ft long and 30ft wide. The path of uniform width is set around edge. If remaining area is 400ft2, find width of path?
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?
How much must we charge for tickets to maximize revenue? How many tickets will be sold at given price? Find maximum revenue be? Assume there is no limit on seating.
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
A fire is spotted from towers and bearings from Aand B are E 14 degrees N and W 34 degrees N, respectively. Determine distance (d) of fire from line segment (AB).
The cow at C is tethered to the post alongside the barn 10 m wide and 30 m long. If post is 10 m from the corner of barn and if rope is 30 m long, determine cow's total grazing area to nearest squa
A company has found that when x units of the product are made and sold, its revenue is provided by x 2 + 100 x dollars and its costs are provided by 240 x + 500 dollars.
Let R be region formed by union of square and all triangles, and let set be smallest convex polygon that has R. Determine area of region which is inside S but outside R?
800 feet of fencing is available to make 2 adjacent rectangular pens. Fencing is needed along perimeter as well as through middle. State total area of the pens as the function of x.
Find age at which there are most hunters? About how many hunters are of given age? Are number of hunters increasing or decreasing for individuals who are between 40 and 45 years of age?
The strip of ribbon is cut in 3 smaller strips in ratio 2:3:5. If shortest of three strip is 30 inches in length, determine length, in inches, of ribbon before it was cut?
Distance between home plate and dead center field is 417ft. Find distance from dead center field to third base. The distance between home plate and third base is given as 90ft.
Find amount of energy released by the earthquake of magnitude 7.5. First, simplify problem so that it is written in form b = log a. Then, solve problem for E, energy released by earthquake.