Posted by gina on Monday, December 6, 2010 at 8:32pm.
2X + 2H20 = 2XOH + H2
So two moles of X reacts with water to produce 1 mole of hydrogen.
Let R = relative atomic weight of the alkali metal.
1.020 l /22.4 l = 3.5 g /2R
R=(3.55/2)*22.4/1.02
=39.0
The alkali metal with a RAM closest to 39.0 is.....
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