What does first ionization energy describe?

Find the exact value of the expression, if possible. Do not use a calculator.tan-1

Place the following types of electromagnetic radiation in order of increasing wavelength.  microwaves           radio waves          x-rays 

Identify the correct quantum number values for an electron in the 3p sublevel.

If you inflate a balloon from a volume of 0.100 L to 1.85 L against an external pressure of 1.00 atm, how much work is done (in joules)? (Show work for full credit 5pts) 101.3 J/atm L

Calculate the wavelength of light in nm associated with the transition from n = 1 to n = 3 in the hydrogen atom. ΔE=RH (1/n2f – 1/n2i)       RH= 2.18×10-18 J/atom;     c = 3 x 108 m/s      h=6.626 x 10-34  J s; (Show work for full credit)

Which of the following sets of quantum numbers contains an error?

Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction: 4 SO3(g) → 4 S(s) + 6 O2(g)                 ΔH°rxn = ? Given: SO2(g) → S(s) + O2(g)                    ΔH°rxn = +296.8 kJ2 SO2(g) + O2(g) → 2 SO3(g)     ΔH°rxn = -197.8 kJ

Which of the following substances (with specific heat capacity provided) would show the greatest temperature change upon absorbing 100.0 J of heat?  

Solve the logarithmic equation for x. Give an exact solutionln = x