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If the work function of a metal is 4.51 eV, what is the maximum wavelength of light that can be used to observe the photoelectric effect?
Calculate the acid dissociation constant Ka, for the ammonium ion (NH^4+); Kb for NH3 is 1.8 x 10^-5
What is the number of chlorine atoms are in 5.0 g chloral hydrate?
Starting with a 0.1 M solution and making a series of 1:100 dilutions, how many dilutions must you make to prepare a solution, that on average, has fewer than one molecule of solute per liter of solvent.
Calculate the potential delivered by a voltaic cell using the following reaction if all dissolved species are 2.5 x 10 -2 M and the pressure of H2 is 1.0 bar.
Which compound has the higher barrier to rotation about the central C-C bond: 2,3-dimethylbutane or 2,2,3-trimethylbutane. Or is the barrier to rotation for each the same? Please draw out and explain reasoning, use extra paper if necessary.
The concentration of sulfuric acid in the lead-storage battery of an automobile over a period of time has decreased from 38.0 percent by mass (density = 1.29 g/mL) to 26.0 percent by mass (1.19 g/mL). Assume the volume of the acid remains constant..
A solution is prepared by dissolving 2.33g of C60 in 100.0g of toluene. Given that the vapor pressure of pure toluene is 5.00kPa at 30C what is the vapor pressure of toluene in the solution.
calculate the composition of the vapor (in terms of mole fractions) at 25°C. At 25°C, the vapor pressures of pure CH2Cl2 and pure CH2Br2 are 133 and 11.4 torr, respectively.
The heat of combustion of bituminous coal is 2.5 × 104 J/g. What quantity of the coal is required to produce the energy to convert 100. lb of ice at 0°C to steam at 100°C
O CH3 CH3CH2CNHCHCH3 Name compound double bond from O and single bond from methyl group
Hydrogen gas can be produced in the labratory through the reaction of magnesium metal with hydrolic acid: Mg (s) + 2HCl (aq) ---> MgCl2 (aq) +H2 (g). What is the volume, in liters, of H2 gas produced at 26C and 770mmHg from the reaction of 13.0g o..
Molecules which are polar overall exhibit a property called a dipole moment. Which of the following possesses polar bonds but has no dipole moment
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