Why does a reaction slow down with time? O A. The exponents in the equation change.
B. Molecules stop reacting when they collide.
C. The rate constant decreases over time.
D. The reactant concentrations decrease.

State two physical properties of ionic compound

Ineed this awnser fast select the correct answer. this chemical equation represents the burning of methane, but the equation is incomplete. what is the missing coefficient in both the reactants and the products? ch4 + → co2 + a. 0 b. 1c. 2d. 3 e. 4

Hno2 + caco3 = h2co3 + ca(no2) can someone balance this