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0.35g of an unknown compound dissolved in 100.0ml of water ahas an osmotic pressure of 32.6...

0.35g of an unknown compound dissolved in 100.0ml of water ahas an osmotic pressure of 32.6 mmhg at 15C. calculate the molar mass of the compound, answer 2 3 sig figs
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Answer #1

π=mRT

= (W2*1000*RT)/(M2*w1)

M2=w2*1000*RT/π*w1

W2=0.35g, R=0.0821,T =288 ,

π =(32.6/760)=0.043 atm, w1=100g

=(0.35*1000*0.0821*288)/(0.043*100)

=1.92*10^3g

=1.92kg

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