A lungful of air (500 mL) contains 4.1 CO2 by volume. How many ...

[jjjetplane]

A lungful of air (500 mL) contains 4.1 CO2 by volume. How many grams of KO2(s) is needed to remove the CO2 from a lungful of air at STP according to the following reaction?
 
  4 KO2(s) + 2 CO2(g)  2 K2CO3(s) + 3 O2(g)
  A) 0.065 g
  B) 0.13 g
  C) 0.26 g
  D) 1.2 g

Question 2

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

[Dunkey]

Answer to Question 1

B

Answer to Question 2

D)

[jjjetplane]

Thanks

[Dunkey]

Welcome