Which gas is produced when active metals react with cold water?
A) Oxygen
B) Carbon dioxide
C) Hydrogen
D) Nitrogen
Correct Answer:
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Q54: Use the following information to select the
Q55: Which is the anhydride of sodium hydroxide?
A)NaO
B)Na2O
C)NaOH
D)Na(OH)2
Q56: What is the maximum density of water?
A)0.804
Q57: Which is a basic anhydride?
A)Sodium oxide
B)Nitrogen dioxide
C)Dinitrogen
Q58: Hard water contains salts of
A)potassium and sodium.
B)calcium
Q60: What type of bond exists within the
Q61: A sample of liquid water at 100.
Q62: Which of the following compounds will not
Q63: What quantity of heat must be removed
Q64: Which of the following substances would exhibit
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