Which is a conjugate pair in the following equilibrium? H2C204(89) + HPO, 2 =HC204 (aq) + H2PO4 (aq)

А. HPO4^2- and HC204-
B. HPO4^2- and H2PO4-
c. H2C204, and HPO4^2-
d. H2C204 and H2PO4-

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

What are transitions between a liquid and a solid called? identify which way they are transitioning

Water is initially present in a state where its molecules are far apart. during a change of state, its molecules slow down. which change of state has most likely taken place? from a gas to a liquid from a liquid to a gas from a solid to a liquid from a gas to a plasma