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moonlight93
 one year ago
a solution of 1.15g of solute dissolved in 25.0 mL of H2O at 25 degree C has a boiling point of 100.85 degree C. What is the molar mass of the solute if it is a nonvolatile nonelectrolyte and the solution behaves ideally ( s of H2O at 25 degree C = 0.997 g/mL) ?
I need help with this problem!
what formulas should I use, and how can I start with this?
Thank you for any help.
moonlight93
 one year ago
a solution of 1.15g of solute dissolved in 25.0 mL of H2O at 25 degree C has a boiling point of 100.85 degree C. What is the molar mass of the solute if it is a nonvolatile nonelectrolyte and the solution behaves ideally ( s of H2O at 25 degree C = 0.997 g/mL) ? I need help with this problem! what formulas should I use, and how can I start with this? Thank you for any help.

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surry99
 one year ago
Best ResponseYou've already chosen the best response.0Look up boiling point elevation

surry99
 one year ago
Best ResponseYou've already chosen the best response.0you will find a formula that will get you started.

moonlight93
 one year ago
Best ResponseYou've already chosen the best response.0can you check my work, and my final answer please. (100.85  100.00) °C / (0.512 °C/m) = 1.660 m (1.660 mol/kg) x (25.0 mL x (0.997 g/mL) / (1000 g/kg)) = 0.04138 mol (1.15 g) / (0.04138 mol) = 25.27 g/mol

surry99
 one year ago
Best ResponseYou've already chosen the best response.0Method looks fine, math looks good as well.

moonlight93
 one year ago
Best ResponseYou've already chosen the best response.0the final answer should be 28
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