Question

How many grams of the nonelectrolyte sucrose (molar mass -342 g / mole) must be added to 450 grams of water (molar mass 18.0 g / mole) to change the vapor pressure to 745 mm Hg at 100
How many grams of sucrose Akerla (molar mass -342 g / mol) must be added to 450 grams of water (molar mass 18.0 g / mol) to change the vapor pressure to 745 mm Hg at 100
bobpursley
vapor pressure is related to mole fraction

moles sucrose=massSucrose/342
moles water=450/18

total moles add them

745/760=molessucrose/total moles

solve for massSucrose

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