Consider the irreversible reaction A + 2 B → 3 C .

Which of the following correctly expresses the rate of change of [B] ?

a. Δ[B]Δt=-2 (rate of rxn)
b. Δ[B]Δt= +(rate of rxn)
c. Δ[B]Δt=-12(rate of rxn)
d. Δ[B]Δt=-(rate of rxn)
e. Δ[B]Δt= +12(rate of rxn)
f. Δ[B]Δt= +2 (rate of rxn)

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils

Use the drop-down menus to label each of the following changes p for physical change and c for chemical change. the substance changes to a new substance. the original substance can be recovered. the color changes. gas is produced and given off. the substance changes size, shape, or volume.