I THINK that the reaction is a 1 to 1 mole reaction , so you should need 3.5 moles of H2O.
3.5 moles of H2O*(18.00g/1 mole)= mass of H2O
***2-significant figures.
Like I said, I think 3.5 moles of H2O is needed.
how many grams of H2O are needed to react completely with 3.5 moles of ethylene?
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