Hard water contains salts of
A) potassium and sodium.
B) calcium and magnesium.
C) barium and lithium.
D) barium and sodium.
Correct Answer:
Verified
Q53: Which is the anhydride of calcium hydroxide?
A)CaOH
B)Ca(OH)2
C)CaO
D)CaO2
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
Q59: Which gas is produced when active metals
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
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