Explore BrainMass
Share

Explore BrainMass

    Chemistry Solutions

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    1) An FM station broadcasts at 106.9 MHz, calculate the wavelength of the corresponding radio waves.

    2) What is the amount of energy packaged in a photon with a wavelength of 310 nm ?

    3) Calculate the frequency of EM radiation with a wavelength of 1.2 x 10-7 m

    4) Write the full electronic configuration for

    Sr

    He

    Zn

    Br

    5) For each of the following elements indicate which set of orbitals is being filled last (# of sublevel & s,p,d,f)

    W

    Fe

    Na

    6) How many valence electrons are in:

    Mg C Br Cs

    7) How many electrons can fit in a "d" subshell ?

    8) How many orientations are there for "f" subshells ?

    9) In each of the following sets of elements indicate which element has the largest atomic size

    Li, Rb, Cs B, Ga, Tl F, Cl, I

    10) Which element in each set has the lowest ionization energy ( 6pts)

    Li, K, Cs

    Li, C, F

    F, Cl, I

    11) Write the valence configuration only for Al

    12) Which "block" are following elements in - s,p,d,f

    Te Cs

    Nd Mo

    Au Br

    13) Which element has the highest electronegativity?

    Ga Br As

    © BrainMass Inc. brainmass.com October 10, 2019, 6:34 am ad1c9bdddf
    https://brainmass.com/chemistry/general-chemistry/chemistry-solutions-548828

    Solution Preview

    Please see the attached Solution.

    1) An FM station broadcasts at 106.9 MHz, calculate the wavelength of the corresponding radio waves.
    c = f* λ
    3.0 x 10^8 m/s = 106.9 x 10^6 Hz * λ
    λ=wavelength= = 3.0 x 10^8 m/s divided by 106.9 x 10^6 Hz
    λ = 2.806 meters.

    2) What is the amount of energy packaged in a photon with a wavelength of 310 nm ?
    E = hf = hc/λ = (6.63 x 10^(-34) Js * 3.0 x 10^8 m/s ) / (310 x 10^-9 m)
    = 6.416 x 10^(-19) J

    3) Calculate the frequency of EM radiation with a wavelength of 1.2 x 10-7 m
    c = f* ...

    Solution Summary

    The FM station for boardcasts are calculated. The amount of energy packaged in a photon with a wavelength is given.

    $2.19