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Calculate the wavelength of light required to remove an electron from a ground state hydrogen atom.
A 20 mg sample of a compound is dissolved in 5.0 ml of water and extracted with 2.5 mL of heptane. After separation of the layers, the heptane layer is found to contain 15 mg of the compound. What is the partition coefficient of the compound, Khep..
How many grams of sodium nitrite must be added to a 75.0 mL of 0.050M nitrous acid (Ka=4.5 x 10^-4) to create a solution that has a final pH of 4.20 (assume no volume change)
How many total calories do you consume from these three organic substances when you eat 1 candy bar 3 times a day?
The ball is whirled at a constant rate of three revolutions per second and is released on the upward part of the circular motion when it is 0.75 m above the ground. The ball travels straight upward. In the absence of air resistance, to what maximu..
What is the molecular formula and structure? Also what does its infrared spectrum and NMR spectrum show?
What is an alternative way to draw this molecule? (include the resulting formal charge on the Nitrogen, please)
Calculate the theoretical yield of when 114 g of C2H6 reacts with 206g of Cl2 , assuming that and react only to form and .
0.1 Mol L-1 of HC2H3O2 and 0.05 mol L-1 of Hno2 are added to the same container of water at 298 K. compute the final pH of this solution.
At 570. mm Hg and 25C, a gas sample has a volume of 2270 mL. What is the final pressure (in mm Hg) at a volume of 1250 mL and a temp of 175C?
The reactions represented below are all spoontaneous as written. For each, write the anode and cathode half - reactions and indicate the signs of the electrodes.
For the reaction 2HCl+Na2CO3 →2NaCl+H2O+CO2 what volume of 0.45 M HCl solution would be needed to produce 2.5 L of CO2 at STP?
the manufacture of perfumes, contains 3.758 g of carbon, 0.316 g of hydrogen, and 1.251 g of oxygen. What is the empirical formula of this substance?
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