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Author Question: Which of the following polyatomic ions has the least atoms per formula unit? A) ammonium B) ... (Read 62 times)

lak

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on: Aug 27, 2018
Which of the following polyatomic ions has the least atoms per formula unit?
 
  A) ammonium
  B) carbonate
  C) dihydrogen phosphate
  D) acetate

Question 2

The action of some commercial drain cleaners is based on the following reaction:
 
  2 NaOH(s) + 2 Al(s) + 6 H2O(l)  2 NaAl(OH)4(s) + 3 H2(g)
 
  What is the volume of H2 gas formed at STP when 6.32 g of Al reacts with excess NaOH?
  A) 3.50 L
  B) 5.25 L
  C) 7.87 L
  D) 8.59 L

Question 3

Which chemical symbol represents a metalloid?
 
  A) Al
  B) B
  C) Ga
  D) Zn
  E) Ar


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Missbam101

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Reply #1 on: Aug 27, 2018
Answer to Question 1

B

Answer to Question 2

C

Answer to Question 3

B


lak

  • Member
  • Posts: 546
Reply 2 on: Aug 27, 2018
Thanks for the timely response, appreciate it

nguyenhoanhat

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Reply 3 on: Yesterday
Excellent

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