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What is the smallest energy photon that can be absorbed by a hydrogen atom in its sixth excited state? (in eV)
Define what is the constant if the frequency is 4.46 x 10 to the 14th power Hz and the wavelength is 670 nm
The first order decay of radon has a half-life of 3 days. How many grams of radon remain after 7.22 days if the sample initially weighs 250.0 grams
predict the atomic radius for selenium se given the atomic radius of sulfur s 0.104 nm and tellurium te 0.143
What is the chemical formula of a homonuclear diatomic gas if it has a pressure of 1.40 atm and a density of 1.82 g/L at 27 ºC?
Determine what volume of .1 M HBr is required to neutralize 50 ml of .140 M Barium hydroxide and determine the normality of a solution consisting of 10.51 mg of NaOH in 591 mL of solution
determine the mass of agno3 mw 170gmol required to dissolve in 400 ml solution in order to prepare a solution which is
Assume three significant figures and an average wavelength of 504 nm for solar radiation. A green leaf has a surface area of 2.00 cm^2
Determine the mass in grams of Ni in the original sample? Determine the weight percent of Ni in the sample?
Calculate the quantity of energy produced per mole of -235 (atomic mass = 235.043922 ) for the neutron-induced fission of -235 to produce -137 (atomic mass = 136.9253 ) and -97 (atomic mass = 96.910950 ).
1. given the following heat of formation values calculate the heat of reaction forc3h8g o2greg co2g h2oldhf values in
two spheres labeled a and b have identical masses but are made of different substances. the specific heat capacity of
What is the estimated temperature of the object using the above approximate prescription? what is the percent error?
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