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The visible part of the hydrogen atom spectrum is called the Balmer series (n1 = 2). The violet line has a wavelength of 410.2 nm. What is the initial energy level (n2) of the electron for this transition?(1) 1 (2) 2 (3) 3 (4) 4 (5) 6.
If units were explicitly specified for Kp of the reaction above, they would be [atm]n. What would be the value of n for this reaction?
Calculate the distance (in Angstroms) and energy (KJ/mol) where the molecules are most attractive.
Consider the reaction 2ZnS + 3O2 → 2ZnO + 2SO2. Suppose that you wanted enough O2 to completely react with 500. g of ZnS.
An inflated balloon has a volume of 0.55 L at sea level (1 atm) and is allowed to rise to a height of 6.6 km, where the pressure is about 0.40 atm.
Calculate the amount of heat liberated (in kJ) from 355 g of mercury when it cools from 76.0°C to 13.0°C.
When 27.5 mL of 0.520 M H2SO4 is added to 27.5 mL of 1.04 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate
To 1.00 L of a 0.100 M aqueous solution of benzoic acid (C6H5COOH) is added 1.00 mL of 12.0 M HCl. What is the percentage ionization of the benzoic acid in the resulting solution? [Ka(C6H5COOH) = 6.5 × 10-5]
determine the amount of heat energy needed to convert 255g of substance x from 40 degrees to 300 degrees
A 25.0 g sample of pure iron at 91°C is dropped into 57 g of water at 15°C. What is the final temperature of the water-iron mixture?
A weighing dish containing an impure sample of benzoic acide was found to weigh 12.35g. the weighing dish weighs 8.22g. The impure benzoic acid was recrystallized and thoroughly dried. The recrystallized benzoic acid weighed 2.48g. What is the per..
The temperature is increased to 45 degree celcius then determine what is the pressure in the cylinder
A sample of nitrogen gas in a 4.6-L container at a temperature of 30.°C exerts a pressure of 3.9 atm. Calculate the number of moles of gas in the sample.
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