What does the reaction rate indicate about a particular chemical reaction? A
The reaction rate indicates the rate of change of concentration of a reactant or product is in mol/(L/s).

B
The reaction rate indicates the rate of change of concentration of a reactant or product is in meters.

C
The reaction rate indicates the rate of change of concentration of a reactant or product is in light years.

D
The reaction rate indicates the rate of change of concentration of a reactant or product is in pounds.

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.

i believe the answer is true.

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.