The mole fraction of glucose () in an aqueous binary solution is . The mass percentage of water in it, to the nearest integer, is .

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Strategy:
 In a binary solution with mole fraction  for glucose, the mole fraction of water is . Use these ratios as a basis to find the masses of both components and then calculate the mass percentage of water.

Step 1: Basis of 1 total mole
- Glucose:  Mass .
- Water:  Mass .

Step 2: Calculate mass percentage of water
Total mass .

Nearest integer is 47.

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