What is the term for an investigation that entails performing an ...

[BRWH]

What is the term for an investigation that entails performing an experiment, proposing a hypothesis, testing the hypothesis, and stating a theory or law?
 
  A) alchemy
  B) chemistry
  C) science
  D) scientific method
  E) none of the above

Question 2

The ozone molecules in the stratosphere absorb much of the ultraviolet radiation from the sun, protecting life on Earth.
 
  At a certain altitude, the temperature of the stratosphere is 240 K and the partial pressure of ozone is Calculate the number of ozone molecules present in 1.00 L of atmosphere at that altitude. A) 2.1  1015 molecules of O3
  B) 4.3  1015 molecules of O3
  C) 8.0  1031 molecules of O3
  D) 1.8  1032 molecules of O3

[soda0602]

Answer to Question 1

D

Answer to Question 2

B

[BRWH]

Excellent

[bdobbins]

Gracias!