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draw an energy level diagram for Hydrogen starting at n=2 and ending at n=6. (n=1 transitions are high-energy transitions and emit in the ultra-violet region). Draw all emissions arrows (arrows pointed down) for each transition going to a final state of n=2.
When Cl2 is used as water disinfectant, the following reactions should be used to determine the concentration of different species.
How much heat is required to warm 12.0 g of ice, initially at -11.0 C, to steam at 113.0 C?
What is the normality of a solution prepared from 10 ml 0.6 N nitric acid by diluting it to 60 ml
A solution of ammonia and water contains 4.70×10 water molecules and 5.50×10 ammonia molecules. How many total hydrogen atoms are in this solution?
Calculate the enthalpy change in kJ when 19.1g of H2S is burned. 2H2S(g) + 3O2(g) --> 2SO2(g) + 2H20(g) Change in H= -1036kJ/mol
If the volume of an unknown liquid is measured and found to be 6.510 L, what is the volume of the unknown liquid in milliliters?
A sample of neon effuses from a container in 79 seconds. The same amount of an unknown noble gas requires 161 seconds.
When an outside plastic envelope is removed, O2 molecules penetrate the paper causing the reaction to begin. A Typical packet contains 250 grams of iron to warm your hands or feet for up to 4 hours.
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.323 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 24.5°C, what is the minimum temperature reached by the solution?
An electron in the ground-state He+ ion undergoes a transition to a state described by the wavefunction R4,1(r)Y1,1(?,). (a) Describe the transition using term symbols. (b) Compute the wavelength, frequency, and wavenumber of the transition.
The fatty acid esters of glycerol in #1 undergo SAPONIFICATION when treated with aqueous NaOH to form soap. From the structure of fatty acid esters of glycerol that you wrote earlier, write the structure of the corresponding soap.
When 0.549 moles of a certain gas fill a balloon the volume is 75 mL. If enough of the same gas is added to the balloon until 1.44 moles of gas are present, what is the new volume of the balloon?
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