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An electron makes a transition from n = 8 to n = 3. What is the energy associated with this transition?
a 7.00 solution by mass of an enzyme in water has an osmotic pressure of 20.0 torr at 291 k. calculate the molar mass
what is the pH of a solution formed by combining 200.0 mL of 0.16 M HCL with 300.0 mL of 0.091 M NaOH at 25 degrees celcius
Elemental analysis is performed on an organic liquid with a fishy odor. Vaporization of 275.0 mg of the compound in a 190-mL bulb at 110°C gives a pressure of 400.0 torr. What is the molar mass of this compound? Enter units.
the solubility of nh3 in water at an nh3 pressure of 320 mmhg is 22.8 g100 ml. what is the solubility of nh3 if the
The reaction 4PH3(g) -> P4(g) + 6H2(g) is found to be first order in PH3 with a rate constant of 1.6*10^-2 sec^-1 at 650 C. a)Give the rate law (rate equation) for the reaction and explicitly state how the reaction rate in this case would be defin..
KCl and sucrose (C11H22O11) are desolved in the same beaker of distilled water. write one mass balance and one charge equation that describe the resulting solution
a rigid ball contain 25.0 liters of air at 22 degree Celsius and 6.25atm pressure was placed in an oven at a temp of 100degree what was the new pressure inside the ball.
For a particular redox reaction MnO2 is oxidized and Ag+ is reduced to Ag write a balanced equation
Does the presence of water vapor affect the result? Explain why it does or does not have a large affect on the value obtained.
what mass of nacl must be dissolved in 65.0 grams of water to lower the freezing point by 7.50 degc? the freezing point
A hot-air balloon has a volume of 875L. What is the original temperature of the balloon if its volume changes to 955L when heated to 56 degrees celsius
When 4.0 g of sulfur is burnt in excess oxygen, 40 KJ of heat is evolved. What is the enthalpy change for the combustion of sulfur?
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