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What is the maximum kinetic energy of a photoelectron ejected fromcesium by 555 nm light? Note that if the wavelength of light usedto irradiate the cesium surface becomes longer than 660 nm, nophotoelectrons are emitted. keep getting 5.7 *10^-20 while book has 6.02*10^-20
Assume that each photon has sufficient energy to eject one electron. (Note currents are reported as positive values.)
What is the pressure of the gas in this mercury manometer if h = 73 mm and atmospheric pressure
We wish to prepare a buffer of pH 10 using common laboratory reagents. How many mL of 6M HCl would we have to add to a solution prepared by adding 100 mL of 15M NH3 to 200 mL of water?
At a temperature of 60 ºC, about 0.8 g CO2 can be dissolved in 100 g water. what would be the mass of CO2 which can be dissolved in 100 g water at 10 ºC?
The compounds listed above were heated in ethanol and sodium hydroxide for approximately 60 minutes. Then extracted with dichloromethane to get the final product.
The specific internal energy of helium at 300k and 1 atm pressure is 3800j/mol and the specific molar volumeat thesame temp. and pressure is 24.63l/mol.
calculate q, w, and change in enthalpy for the helium in the balloon. (the molar heat capacity for helium gas is 28.8 J/ degrees C mol.)
Calculate the number of grams of H2 formed If the wet Hydrogen gas formed occupies a volume of 9.67 Litres
Order of reactivity, Suggest an explanation for the fact that the order of reactivity of the halides toward n-butylbrosylate in acetone
How many mL of a .1 N solution of NaOH must be added to a 25 mL solution of .1 N HAc to obtain a pH of 9.75? What is the concentration of HAc at this pH
What is the total mass of AlCl3 in this sample? b. How many moles of AlCl3 are in this sample?
Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A reading of 276 units was obtained for the intensity of the 671 nm red emission line
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