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Determine the numbers of photons will be required to raise the temperature of 2.0g of water by 1.7 K? Water is exposed to infrared radiation of wavelength 2.7x10-4cm.
Every class has 1 teacher and 25 students. For every 14 teachers there is 1 assistant principal. Find number of assistant principals present in high school?
What is the binding energy of the electron in kJ/mol? (KE=1/2mv2; 1 electron volt (eV) = 1.602 x10-19J) when an X-ray photon of wavelength 0.999nm strikes a surface. The emitted electron has a kinetic
Calculate the amount of heat (KJ) given off when 2.43 X 10^4g of ammonia are formed according to the following equation. Assume that the reaction takes place under standard- state conditions at 25.0
How many grams of M(s) will be produced if we operate the system at 100% efficiency if we electrolyze a solution which is having the M2O73- for 35.51 hr using a current of 2.013 amp to isolate
Tolerance upper and lower specification limits are 2,400 hours and 1,600 hours, respectively. Is the process capable of producing DRAM chips to specification?
The actual concentrations are Co2+ (aq) = 0.100M,Cd2+=0.0100M. Determine the actual potential of this galvanic cell?
Determine the total pressure of a gaseous mixture contains a partial of hydrogen 3.4 atm and of oxygen 6.3 atm according to Dalton's law.
The vapor pressure of methyl alcohol is 254 mm Hg at 40oC and at the same temperature the vapor pressure of ethyl alcohol is 135 mm Hg. Solutions of the two alcohols behave ideally; that is, they fo
Explain how much would the freezing point be lowered by the addition of 4.8 kg of Pre stone? (Ethylene glycol, C2H4 (OH)2, a non-electrolyte) if the radiator of an automobile contains 12 liter
Explain how much glucose, C6H12O6, should be used per liter for an intravenous injection that is to have the same osmotic pressure as blood when the osmotic pressure of blood at the normal
Illustrate the structure for the compound when a very old bottle labeled only "chlorinated benzene" was found in the stockroom.
Which one of the products listed below is a possible reduction product of the nitrogen molecule? The nitrogen molecule was involved in a chemical reaction in which it underwent reduction.
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