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An electron initially in the n=2 energy level in a hydrogen atom absorbs a photon of light with a frequency of 7.308 x 1014 s-1. Calculate the new energy level the electron will occupy.
if i have 5.6 liters of gas in a piston at a pressure of 1.5 atm and compress the gas until its volume is 4.8 liter what will the new pressure inside the piston be?
A 1.80 g sample of a large boimolecule was dissolved in 18.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
As a chemist for an agricultural products company, you have just developed a new herbicide,"Herbigon," that you think has the potential to kill weeds effectively
Magnesium oxide (MgO) has the rock salt crystal structure and a density of 3.58 g/cm3. Determine the unit cell edge length.
Calculate the percent by mass of aluminum in the sample. The vapor pressure of water at 20 degree C is 17.5 Torr.
A bottle containing 315 g of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
The solution to Equilibrium constant, A certain gas mixture held at 395C has the following initial partial pressures: P(Cl2) = 351.4 torr; P(CO) = 342.0 torr and P(COCl2) = 0.
What is the predominant form of Ile at pH 6 (assuming the pKa of the carboxylate is 3 and the amino group is 9?
In a beaker of boiling water, there are many bubbles forming throughout the liquid. What gas comprises the bubbles?
if 0.200mole of NaOH is added to 1 liter of solution that is 0.100M in aqueous ammonia and 0.200M in ammonium chloride how much does the Ph change.
The pressure of 9.0 L of an ideal gas in a flexible container is decreased to one-eighth of its original pressure, and its absolute temperature is decreased to one-forth of the original. What is the final volume of the gas?
In either of the simple distillation experiments, can you account for the boiling point of your product in terms of the known boiling points of the pure components of your mixture?
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