Why are some plants so important in our daily lives?
What will be an ideal response?
Plants are important in our daily lives because a large portion of our food comes from
plants. Plants also supply us with clothing. The houses we live in also come from plants.
A large portion of the medicines we use comes from plants as well.
You might also like to view...
In a chemical reaction run at a certain temperature, the concentration C of a certain reactant at time t is given by 
where 
is the initial concentration and k is the rate constant. Assume the initial concentration is known to be 0.04 mol/L exactly. Assume that time is measured with negligible uncertainty.
a. After 30 s, the concentration C is measured to be 0.0038 ± 2.0 × 
. Estimate the rate constant k, and find the relative uncertainty in the estimate.
b. After 50 s, the concentration C is measured to be 0.0024 ± 2.0 ×. Estimate the rate constant k and find the relative uncertainty in the estimate.
c. Denote the estimates of the rate constant k in parts (a) and (b) by 
respectively. The geometric mean 
is used as an estimate of k. Find the relative uncertainty in this estimate.
Nail polish are protected from chipping by applying a:
What will be an ideal response?
Simple harmonic motion and constant velocity motion can both be used at high speeds.
Answer the following statement true (T) or false (F)
Gases produced by welding include:
A) Ozone B) Nitrogen dioxide C) Carbon monoxide D) All of the above