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The emission spectrum of hydrogen revealed several strong lines with spectroscopic observation. One of the red lines occurred at 656.2 nm and one of the purple lines occurred at 410.1 nm. Determine the energy of a photon of each of these wavelengths. Which photon possesses more energy, the red or the purple?
Compute the number of mL of 2.00M H2SO4 required neutralizing 125.5mL of 1.2M KOH
how much energy is required to warm 100g of H2O from 20 degrees celcius to 80 degrees celcius if it is initially in a 140g glass flask? the specific heat of water is 4.18 J/g degree celcius.
Lindane is a popular pesticide throughout the south because it is a persistent chemical (i.e. it remains in the environment and offers protection for a long period of time)
What is the pH after 13.3 mL of base is added? The Ka of butanoic acid is 1.5 X 10^-5.
Calculate the pressure when the volume is 1.27 L and the temperature is 3.00 × 102 K.
Compute the amount of heat evolved in the oxidation of 32.0 grams of Fe at the temperature 25 oC and pressure 1 atm pressure ( ΔHfo(Fe 2 O 3 ,s) = -824kJ/mol)
In the catalytic converter of an automobile exhaust system, some SO2 is converted to SO3 by the reactionSO2(g) + ½ O2(g) ? SO3(g)
Which of the following would be expected to have the lowest freezing temperature?
Which of the following ideal aqueous solutions would be predicted to have the highest vapor pressure. 2.00 m MgBr2
A 100g iron ball (specific heat= 0.473 J/g degrees celcius) is heated to 125 degrees celcius and placed in a calorimeter holding 200g of water at 25.0 degrees celcius. What will be the highest temperature reached by the water?
Hydrochloric acid HCL, completely ionizes when dissolved in water. Calculate the PH of a solution containing
What are the origins of these signals? Why does the spectrum contain two other signals of roughly equal height? What are the origins of these signals
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