Question 5 4 pts 5) What is the wavelength of light emitted when the electron in a hydrogen atom undergoes a transition from level n = 8 to level n = 2 (emission)? |DeltaE] = RH [1/n12 - 1/n221, where c = 3.00 x 108 m/s, h = 6.63 x 10-34 Jos, RH = 2.179 x 10-18J). Delta E = hc/Lamda, 0 537 nm O 197 nm O 389 nm 393 nm 423 nm

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

The independent variable in an experiment will be the variable that you o a) change ob) hold constant ng c) observe for changes

The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants.thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction.ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch,are burned? b) how much energy is released when 22.4g of ch. areburned?