Given the equation representing a reversible reaction: nh3(g) + h2o(l) < => nh4+(aq) + oh-(aq)according to one acid-base theory, the reactant that donates an h+ ion in the forward reaction is(1) nh3(g) (2) h2o(l)(3) nh4+(aq) (4) oh-(aq)

What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?

Idon’t understand this page, can someone ?

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.