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The highly reactive OH radical (a species with an unpaired electron) is believed to be involved in some atmospheric processes. The bond enthalpy for the oxygen-to-hydrogen bond in OH as 460 kJ/mol. What is the longest wavelength (in nm) of radiation that can bring about the following reaction. OH(g) → O(g) + H(g).
The atomic masses of ^10B and ^11B are 10.0129 amu and 11.0093 amu., respectively. calculate the natural abundances of these two isotopes. The average atomic mass of B is 10.811 anu
An experiment shows that a 115 mL gas sample has a mass of 0.170 g at a pressure of 711 mm Hg and a temperature of 33 Celcius. What is the molar mass?
Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H, in enough water to make 3.00 multiplied by 102 mL of solution and then titrate the solution
Light with a wavelength of 330nm shines on a piece of metal with a threshold energy of 4.60 eV. What would you expect for the kinetic energy
It required 16ml of a sodium hydroxide solution titrated against a standard solution of 0.79g of potassium hydrogen phthalate in water to reach equivalence point. What is the molarity of the sodium hydroxide?
As a chemist for an agricultural products company, you have just developed a new herbicide,"Herbigon," that you think has the potential to kill weeds effectively
Use the octet rule to predict the formula of the simplest compound formed from hydrogen and selenium. Why
Calculate the ratios of the different kinds of protons in a compound with an integral ratio of 6 : 4 : 18.4 (going from left to right across the spectrum).
A 0.366-g sample of an unknown reducing agent required 30.0 mL of 0.100 N (normality) KMnO4 for titration. What is the equivalent weight of the reducing agent?
What is the pH of a solution that results when 0.010 mol of HNO3 is added to 500mL of a solution that is 0.10M in aqueous ammonia and 0.20M in ammonium nitrate. Assume no volume change and the Kb for NH3 =1.8*10^-5
arrange the folloeing eluents in the increasing order of their euting power; place the least powerful eluent first; dichloromethane, pentane,water, and methonol.
solution containing a silver electrode. Determine the initial voltage of the cell at 298 K
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