Online teachin ×-+ Use the Refereaces to access important vallers if needed for

Question

Online teachin ×-+ Use the Refereaces to access important vallers if needed for thes gontn The freezing point of water, HO B 0,000 at 1 atmosphere. K/ water)--156-cen In a laboratory experiment, students synthesized a new compound and found that when 11.50 grams of t 298.6 grams of water, the solution began to freeze at 395 °C.The composed was also found to be noevolasle and a noe eletbre the compound were dasolh ed What is the molecular weight they determined for this compound gmol Subenit Answer Retry Entire Group more group attempts reg 8

Explanation / Answer

Using relation:

dT = Kf*m

Putting values:

0.398 = 1.86*m

So,

m = (moles of solute)/mass of solvent in kgs = 0.214

So,

Moles of solute = 0.214*0.2986 = 0.0639

So,

Molar mass = Mass/Moles = 11.5/0.0639 = 179.96 g/mol

Hope this helps !

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