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The energy from radiation can be used to cause the rupture of chemical bonds. A minimum energy of 941 is required to break the nitrogen-nitrogen bond in N2.What is the longest wavelength of radiation that possesses the necessary energy to break the bond?
At constant pressure, the combustion of C2H6 releases 259 kJ of heat. Find delta H for the rxn: 2 C2H6 (g) + 7O2 (g) -> 4CO2 (g) + 6H20(l)
caffeine is about 10 times as soluble in hot water as in cold water, a chemist puts hot water extract of caffeine in to an ice bath and some crystallizes. is the remaining solution saturated unsaturated or supersaturated and why?
Calculate the mass of pure silver that when heated from 12.0 degrees celcius to 15.2 degrees celcius it required 1.25 kj of energy
Assume that the specific heat and density of the resulting solution are equal to those of water [4.18 J/ g.C and 1.00 g/mL ] and that no heat is lost to the calorimeter itself, nor to the surroundings.
If 100. mL of 1.60 M Na2SO4 is added to 200. mL of 2.40 M NaCl, what is the concentration of Na+ ions in the final solution? Assume that the volumes are additive.
What is the molar mass of the gas in a glass bulb with a volume of 2.50 L at a temperature of 22 degrees C and a pressure of 110 mm Hg. The gas weighed 505 mg.
What is the wavelength (in meters) of a proton (mass = 1.673*10^-24 g) that has been accelerated to 30% of the speed of light.
A sample of N2 (g) occupies a volume of 42.0 mL under the existing barometric pressure. Increasing the pressure by 85 mmHg reduces the volume to 37.7 mL. What is the prevailing barometric pressure in mmHg
Calculate the pH of the above solution if 1.00 moles of benzoic acid and .97 moles of Sodium Benzoate are added in enough water to make 750ml of solution
The combustion of pentane with oxygen is a well known process. Write a balanced equation for the reaction of pentane, C5H12, with oxygen, O2, forming the products carbon dioxide, CO2, and water, H2O. What mass of carbon dioxide will be produced by..
sucrose table sugar has the formula c12h22o11 molar mass342.30 gmol and a food value of 6.49 kjg. determine the
If the density of the vinegar solution is 1.00 g?mL, what is the mass percent of acetic acid present?
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