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What is the wavelength of a photon (in nm) of light emitted resulting from an electron in a hydrogen atomundergoing a transition from a n=5 to and n=1 electronic orbital? What is the energy in Joules of an Einstein of these photons (Avogadro's number of photons)? What would be the wavelength (nm) emitted if this were a Helium +1 ion (He+1) instead of a H atom
Stalactites--the long icicle, icicle like formations that hang from the ceilings of caves--are formed from recrystallizing minerals like calcite (calcium carbonate, CaCO3, 100.09 g/mol). The Ksp of calcium carbonate is 4.5 x 10^-9.
How many grams of each reactant remains after the reaction is complete and how many grams of each product is produced
Draw the structural formulas for any three compunds with the molecular formula C4H10O. If its an alcohol, classify each alcohol as primary, secondary, or tertiary?
The atmosphere becomes colder at higher elevation. As an average the standard atmospheric absolute temperature can be expressed as Tatm = 288 - 6.5 × 10?3 z, where z is the elevation in meters.
How many moles of each reactant are used in the epoxidation of cholesterol? Assume the 3-chloroperoxybenzoic acid is 80% pure.
According to the following thermochemical equation, what mass of H2O (in g) must form in order to produce 975 kJ of energy?
Calculate the volume of 1.00 M nitric acid needed to react completely with 25.0mL of 1.84 M calcium hydroxide
Write the condensed electron configurations for the Pt atom. Express your answer in condensed form in order of increasing orbital energy as a string without blank space between orbitals. For example, should be entered as [He]2s^22p^2.
At the point of equilibrium there were 82.63 g of Br2(l). Determine the total pressure in the 50.0 L container at equilibrium.
a technician is plating a faucet with chromium. What mass of chromium could be deposited by electrolysis of an aqueous solution of Cr2(SO4)3 for 180 minutes using a constant current of 10.0 amperes
A solution of ethanol (C2H5OH) in water is prepared by dissolving 72.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 300.0 mL of solution. What is the molarity of the ethanol in this solution?
Capsaicin, the compound that gives the hot taste to chili peppers, has the formula C18H27NO3. (a) Calculate its molar mass.
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