12. Using the equation below, what is the mole ratio _:_ of water (H20) to ammonia (NH3)? BazN2 + 6H2O → 3Ba(OH)2
3Ba(OH)2 + 2NH3

A. 1:2
B. 2:6
C. 6:2
D. 6:3

Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)

Determine the energy released per kilogram of fuel used. given mev per reaction, calculate energy in joules per kilogram of reactants. consider 1 mole of tritium plus 1 mole of deuterium to be a mole of “reactions” (total molar mass = 5 grams).

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.