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Author Question: The action of some commercial drain cleaners is based on the following reaction: 2 NaOH(s) + 2 Al(s) ... (Read 98 times)

jlmhmf

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on: Aug 27, 2018
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 2

What is the term for an element that generally has a low density, low melting point, and is not
  a good conductor of heat and electricity?
 
  A) metal
  B) nonmetal
  C) semimetal
  D) all of the above
  E) none of the above


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Anonymous

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

C

Answer to Question 2

B)


jlmhmf

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Reply 2 on: Aug 27, 2018
Excellent

ricroger

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Reply 3 on: Yesterday
Gracias!

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