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a. In what region of the electromagnetic spectrum wil the electron transitions from a higher energy state to n1=3 appear for the hydrogen spectrum?
b. Calculate the wavelength, in nm, for the nh=4 to n1=3 transition for the hydrogen atom.
calculate the chloride concentration in mEq/L of a solution prepared by diluting 25 g of BaCl2 to 2 L. (WM = 208)
A pound of coffee beans yields 53 cups of coffee (4 cups = 1 ). How many milliliters of coffee can be obtained from 1 of coffee beans?
What is meant by enriched uranium? 1.Enriched uranium is an uranium-containing substance in which its natural amount of uranium-235 was increased.
There is a stock 6.00m solution of sodium chloride available in the lab. What volume of this solution would you need to prepare your solution?
what is the wavelength of a photon that has three times as much energy as that of a photon whose wavelength is 779 nm.
A groundwater sample is taken from a geologic formation containing various carbonate minerals (e.g., CaCO3, MgCO3, CaCO3•MgCO3, etc.) without exposing the water sample to the atmosphere.
calculate the ph of a solution that is prepared by mixing 2.16 grams of propanoic acid, CH3CH2COOH, and 0.56 grams of NaOH in enough water
Consider that sodium hydroxide is added to acetic acid (CH3COOH). What is the direction of equilibrium and by how much. Pka of Sodium Hydroxide
Determine the molar concentration of silver nitrate(AgNO3) in a solution if titration of twenty five mili litres of the solution with 0.300M sodium chloride (NaCl) needs 37.05ml of the sodium chloride solution to reach the end point?
Calculate the potential of a galvanic cell with two platinum electrodes, the one immersed in a solution that is .0301 M in \(Fe^{3+}\) and .0760 M
A lead bullet is fired at a wooden plank. At what speed must bullet travel to melt on impact, if its initial temperature is 25oC and the heating of the plank is neglected.
determine the molarity of a solution prepared by dissolving 45.0g of CH3OH in sufficient water to make 725mL.
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