Which set of coefficients would balance the following chemical equation?
h3po4 + rboh → h2o + rb3po4
question 3 options:
2h3po4 + rboh → 3h2o + rb3po4
h3po4 + rboh → h2o + rb3po4
h3po4 + rboh → 2h2o + rb3po4
h3po4 + 3rboh → 3h2o + rb3po4

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)

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added