FAQs For Lab 2
(Return to Online Intro)
- How do I know the initial
concentration of CO2?
The initial concentration of CO2 is given in the lab. Re-read
the introductory paragraph on the first page of the lab taken from our
text. The initial concentration of CO2 is given in this paragraph.
(The initial concentration is the concentration at dawn, when of course
t = 0.)
- How can I tell if the CO2 level
is increasing or decreasing?
Remember that you have the rate of change of the CO2 level,
which is its derivative. If the derivative of a function is positive,
this means it has positive slope, so it is sloping upwards and therfore
increasing. Similarly, a negative derivative means the function
is decreasing. The sign of the derivative always tells us if
the original function is increasing or decreasing.
(Be careful you aren't looking at where the derivative is increasing or
decreasing! That's not related to where the function increases or decreases.)