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Answer:
512g, 25%
Explanation:
H_2+I_2→ 2HI
3 moles H_2× 2moles HI/1 mole of H_2= 6 moles of HI
2moles I_2×2 moles of HI/1 mole of I_2= 4 moles of HI
Now, theoretical yield of HI = 4 moles ×128 g/ mole = 512 g
percentage yield = (128g/512g)×100 = 25%