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Explain what is the value of [O2(aq)] for water saturated with a mixture of 50% O2, and 50% N2 by volume at 25 Celsius and a total pressure of 1.00atm?
Low-molecular-weight ketones are soluble in water. What is the shortest length of the carbon chain where insolubility becomes important
how many grams of cacl2 should be dissolved in 500 ml of water to make a .20 m solution of calcium
The rate constant for the production of glucose from cellulose with a newly developed catalyst was found to vary with temperature as shown by the data in teh following table. What is the activation energy for this reaction
In 2008, carbon dioxide levels at the South Pole reached 385 parts per million by volume. (The 1985 reading was 314.6 ppm by volume.) Convert the 2008 reading to a partial pressure (in bar).
Using electronegativity, predict in the order of decreasing polarity the following bonds: N-P, N-O, N-C, N-S, N-F. Predict how valence electrons would pair up in the AsO4-3 ion.
The concentrations of ozone in Los Angeles has been measured at 441 ppb. Los Angeles sits at an altitude of 7400 ft where the atmospheric pressure is only 0.67 atm. Calculate the partial pressure (in atm) of ozone at 441 ppb if the atmospheric pre..
On dividing equation five for reaction mixture one by reaction mixture three and after cancelling out the common terms (k', terms in (I-) and (H+)), she got the equation: Distinguishing that 13.3/25 is about equal to 1/2, she obtained an estimated ..
10 mg of magnesium metal and 30 ml of hydrochloric acid are added to 300 ml of water and hydrogen gas is eveloved. The reaction is as follows: Mg + 2HCl -> H2 + Mg2+ (aq) + 2Cl- (aq). Calculate the limiting reactant.
1 a 0.1967 g sample of pure ascorbic acid is weighed out and dissolved in 50 ml of distilled water in an erlenmeyer
When a He atom absorbs a photon to form the excited configuration 1s^1 2s^1 (here called He*) a weak bond forms with another He to form the diatomic molecule HeHe*. Construct a molecular orbital description of the bonding in this species.
a write the propagation steps leading to the formation of dichloromethane ch2cl2 from chloromethane.b explain why
A space probe identifies a new element in a sample collected from an asteroid. Successive ionization energies (in attojoules per atom) for the new element are l1 = 0.507, l2 = 1.017, l3 = 4.108, l4 = 5.074, l5 = 6.147 l6 = 7.903, l7 = 8.294. To wh..
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