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Sagot :
Answer:
2.76 gram
Explanation:
2AI + 6HCl → 2AlCl3 + 3H2
- get the mol of aluminum => n = m / M = 25 / 27 = 0.925 (mol)
- get the ratio mol of Hydro => nH2 = 0.925 * 3 / 2 = 1.38 (mol)
- get weight of hydro mH2 = n x M = 1.38 x 2 = 2.76 (gram)
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