Calculate the vapour pressure of pure water at 65 °C if a 465 mL solution containing 123.0 g of ribose, C5H10O5, has a vapour pressure of 247.54 mbar. Assume no change in volume occurs upon dissolution.
A) 264 mbar
B) 239 mbar
C) 309 mbar
D) 363 mbar
E) 255 mbar
Correct Answer:
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