Which of the following is the shortest? A) 18 inches B) 0.58 ...

[awywial]

Which of the following is the shortest?
 
  A) 18 inches
  B) 0.58 m
  C) 580 mm
  D) 1.9 ft

Question 2

According to the following balanced chemical equation, if you want to generate two moles of H2O , how many molecules of O2 do you need? 2 H2 + O2  2 H2O
 
  A) 1
  B) 2
  C) 1/2
  D) 4
  E) 6.022  1023

Question 3

Which of the following statements best describes a cathode?
 
  A) the negatively charged electrode of a battery or electrochemical apparatus
  B) the place where oxidation is taking place in a battery or electrochemical apparatus
  C) the place from which electrons are flowing away from
  D) all of the above
  E) none of the above

[bubulittle310@msn.cn]

Answer to Question 1

A

Answer to Question 2

E

Answer to Question 3

E

[awywial]

Gracias!

[ashely1112]

Great answer, keep it coming