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brittanyb70
24.09.2019 •
Chemistry
Amixing tank receives 3 inlet stream of sugar solution (sugar + water) with varying concentrations and flow rates: stream 1: mass flow rate - 6.1 kg/hr, sugar mass fraction - 0.80 stream 2: mass flow rate - 9.7 kg/hr, sugar mass fraction - 0.09 stream 3: mass flow rate - 3.9 kg/hr, sugar mass fraction - 0.13 the molecular formula of water is h20, sugar is c12h22011 - the atomic weight of the elements are: c-12kg/kmol h-1 kg/kmol 0 - 16 kg/kmol determine the mole fraction of sugar in the resultant mixture. select one: o a. 0.0239 o b. 0.3178 o c. 0.0245 o d. 0.8985 o e. 0.0167
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Ответ:
There are four kind of intermolecular attractions: ionic, hydrogen bonds, polar and dispersion forces.
B and H have very similar electronegativities, Boron's electronegativity is 2.0 and Hydrogen's electronegativity is 2.0.
The basis of ionic compounds are ions and the basis of polar compounds are dipoles.
The very similar electronegativities means that B and H will not form either ions or dipoles. So, that discards the possibility of finding ionic or polar interactions.
Regarding, hydrogen bonds, that only happens when hydrogen bonds to O, N or F atoms. This is not the case, so you are sure that there are not hydrogen bonds.
When this is the case, the only intermolecular force is dispersion interaction, which present in all molecules.
Then, the answer is dispersion interaction.