How many grams of oxygen are formed when 6.21 moles of KOH are ...

[cnetterville]

How many grams of oxygen are formed when 6.21 moles of KOH are formed? 4 KO(s) + 2 H2O(l)  4 KOH(s) + O2(g)
 
  A) 19.9 g O2
  B) 27.9 g O2
  C) 49.7 g O2
  D) 3.59 g O2
  E) 11.7 g O2

Question 2

Which of the following does not have a charge of -1?
 
  A) bicarbonate
  B) bisulfate
  C) hydrogen phosphate
  D) nitrite

[annierak]

Answer to Question 1

C

Answer to Question 2

C

[cnetterville]

Gracias!

[ttt030911]

Thanks for the timely response, appreciate it