In the reaction, Ca + 2H2O = Ca(OH)2 + H2; what volume (c.c.) of hydro – McqOptions

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1.	In the reaction, Ca + 2H2O = Ca(OH)2 + H2; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water ? (Atomic weight of calcium = 40) ?
A.	4480
B.	2240
C.	1120
D.	0.4
Answer» B. 2240

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