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OpenStudy (anonymous):
Which of the following are not single-displacement reactions? A. KOH (aq) + HNO3 (aq) → H2O (l) + KNO3 (aq) B. Ca (s) + 2H2O (l) → Ca(OH)2 (aq) + H2 (g) C. Na2S (aq) + 2HCl (aq) → 2NaCl (aq) + H2S (g) D. Fe (s) + 2HCl (aq) → FeCl2(aq) + H2 (g)
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OpenStudy (anonymous):
@sarah786 any thoughts
OpenStudy (anonymous):
I think C , not sure :/
OpenStudy (anonymous):
it can be more than one. :)
OpenStudy (anonymous):
A too .
OpenStudy (ipwnbunnies):
I believe it's A and C too, just to confirm. XP
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OpenStudy (ipwnbunnies):
A is an acid-base neutralization, and C is a gas-evolving reaction.
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Use Hvap of water = 40.7 kJ/mol, c of water = 4.184 J/g.u00b0C, and molar mass of HO = 18.
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