_____ grams of 3-Hydroxy propanal (MW = 74) must be dehydrated to produce 7.8g of acrolein (MW = 56) (C?H?O) if the percentage yield is 64. (Round off to the nearest integer).
[Given: Atomic masses: C: 12.0u, H:1.0u, O:16.0u]
_____ grams of 3-Hydroxy propanal (MW = 74) must be dehydrated to produce 7.8g of acrolein (MW = 56) (C?H?O) if the percentage yield is 64. (Round off to the nearest integer).
[Given: Atomic masses: C: 12.0u, H:1.0u, O:16.0u]
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1 Answer
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3-Hydroxy propanal

If 7.8g of C? H? O (molar mass 56 g/mol ) is formed, calculate the initial weight of 3-hydroxy propanal (molar mass 74 g/mol ).
Weight = (7.8/56) × 74 × (100/64) [Assuming 64% yield, though the number seems out of place].
Ans ≈ 16 g.
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