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Author Question: Hard water deposits (calcium carbonate) have built up around your bathroom sink. Which one of the ... (Read 29 times)

APUS57

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on: Aug 27, 2018
Hard water deposits (calcium carbonate) have built up around your bathroom sink. Which one of the following would be best to dissolve the deposit?
 
  A) ammonia
  B) bleach
  C) lye
  D) vinegar

Question 2

All four halogens, F, Cl, Br and I, are diatomic in their free state.
 
  Indicate whether the statement is true or false


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johnharpe

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

D

Answer to Question 2

TRUE


APUS57

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Reply 2 on: Aug 27, 2018
Thanks for the timely response, appreciate it

apple

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Reply 3 on: Yesterday
Wow, this really help

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