Answer:
The grams of hydrogen gas that are released is 0.343 gram
Explanation:
Given that:
2 Na + 2h₂0 ⇒ 2Na0H +N₂
Molecules of Na = 7.9/2.3 = 0.343 mol Na
Now,
2 molecules of Na produces one mole h₂
0.343 mol of Na produce 0.343/2 = 0.1717 mol h₂
h2 = molecules * mw (molecular weight) =0.1717 * 2 =0.343 grams
Therefore the grams of hydrogen gas released is = 0.343 grams
