Given the equation representing a system at equilibrium:
which change causes the equilibrium to shift?

(1) increasing pressure
(2) increasing temperature
(3) adding a noble gas
(4) adding a catalyst

What kind of ion is contained in salts that produce an acidic solution? a positive ion that attracts a proton from water a positive ion that releases a proton to water a negative ion that attracts a proton from water a negative ion that releases a proton to water

Compare and contrast the bohr model and the electron cloud models of the atom.

What is the percentage of hydrogen in c2h4