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How many coulombs and electrons pass through the cell when a current of 0.5 Amps passes through a copper (II) sulphate solution for 15 minutes.
What is the cathode reaction when a solution of nickel (II) sulphate adjusted to a pH of 7 is electrolyzed, the green color of the solution becomes less intense and no gas bubbles are detected
How much will be in account when individual retires at age of 65 if contributions start when person is 45 years old? How much extra money will be in account if individual stops making contribution at
Consider the directing effects of the ester and the first nitro group on the addition of the second nitro group. Illustrate the structure of dinitroester?
Determine the volume of hydrogen gas at 40 degrees Celsius or 313Kand 20.0 torr obtained when the .255g of boron hydride reacts.
Determine the velocity of a neutron whose de Broglie wavelength is 500 pm. The mass of a neutron is1.67 x10-24 g. use this formula:
The volume of the mixture is 1.7 L and its total pressure is 0.810 atm if zinc metal is added to hydrochloric acid to generate hydrogen gas and is collected over a liquid whose temperature is the sa
If P is fixed can T vary if a solution of 0.1 mol al AgNO3 in water saturated with AgCl and AgBr (both solids present), is placed in an evacuated vessel of larger volume than the solution. List
If a solution contains 57.2% H2O, 32.6% HDO and 10.2%D2O by mass, what is DS, DG, DV and DH for the separation process if the temperature is 21 °C? Liquid chromatography can be us
The pressure of an unknown gas is measured with a manometer. The pressure is measured as 673 mmX. What is the pressure in mmHg? Instead of mercury the manometer is filled with a liquid (X)
Use orbital configurations to determine which has the stronger bond for each of the following pairs: (a) O2 or (b) O2+; (c) N2 or (d) N2+; (e) F2 or (f)F2+; (g) CN or (h) CN-. Enter the
Let S be set of all people in world. For a, b E S, state the binary relation R as follows: ( a, b ) E E if and only if a and b have visited same webpage. Is this example of the partially ordered set
Determine how many pounds of CO2 are formed from the complete combustion of 1.00 gal of gasoline? Assume that gasoline has the formula C8H18 and has a density of0.703g/mL.
Explain in terms of the dissolution equilibrium for AgBr and Le Chatter's principle, discuss how the formation of this ion explains the fact that silver bromide is soluble in concentrated NH3(aq).
Determine the numbers of grams of fat would to be burned to heat one liter of water (d = 1.00 g/mL) from 25.00 oC to 30.00oC? The specific heat of water is 4.184 J/goC.
Calculate H of this reaction when 26.0 mL of 0.565 M H2SO4 is added to 26.0 mL of 1.13 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature raises to30.17°C.
The recent transportation survey of w urban commuters (i.e., n(U)=w) yielded given information. Find number of people rode (i) trains and buses, (ii) only buses, (iii) buses, and (iv) trains or buses?
The bowl has six red gum balls, eight green gum balls. You reach in and remove three gum balls all at once. Determine probability that the three gum balls are all red.
Determine least number of cables needed to connect 8 computers to 4 printers to guarantee that for every choice of 4 of 8 computers, these 4 computers can directly access 4 different printers.
Before that, the point near top of towe was 51.6,m from the point at base, and top point was directly above the point on ground 4.93, from base point. How much point on ground moved toward base poin
Determine function Phi explicitly for two-point boundary-value problem: x"=e^-2t-4x-4x', x(0)=1,x(2)=0. Determine initial-value problem whose solution solves boundary-value problem?
Determine equation of motion x(t) if impressed force f(t) = t acts on system for 0 < t < 6 and is then removed. Use the graphing utility to graph x(t). Determine limit of x(t) as t tends to in
Assume I buy 17-strike put, and to decrease my premium, I sell two 14-strike puts. Determine profit at expiration from this combined financial instrument as (piecewise) function of spot price in six
Compute proportion of time that employee is busy. Compute average number of people receiving and waiting to receive information. Determine average number of people waiting in line to get information.
Generalize argument to illustrate that we can throw away 99% of N and still have the set of same size left. Show the correspondence with some particular examples.