Respuesta :

The equation for the reaction is:-

 2Na + 2H20 ----> 2NaOH + H2

using molar masses

2*23 g  Na produces  2 grams of hydrogen
0,75g             ..             0.75 *  2  / 46   =    0.03261  g hydrogen gas 

= 0.03261 * 22,400  =   730.4  mls of hydrogen Answer

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