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anonymous

  • one year ago

Which aqueous solution freezes the lowest temperature? a)0.30 m C2H5OH B) 025 M KNO3 C) 0.20 M CaBr2 d) 0.10 m FeCl3 when I calculate the molarity for all of them, it turns out the answer is B but I'm nit sure. please help

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  1. aaronq
    • one year ago
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    are you sure b) and c) are given in molarity (capital M)

  2. anonymous
    • one year ago
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    B) 0.25 M

  3. anonymous
    • one year ago
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    NO small m

  4. aaronq
    • one year ago
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    okay, so next time copy the question correctly. capital M is molarity and lowercase m is molality. they're different. Use the formula \(\Delta T=i*m*Kb\) Kb is constant, so focus on the value for i, the van't hoff constant, and the molality. I can tell you it's not b)

  5. anonymous
    • one year ago
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    thank you so much I did not know they are different. good information

  6. aaronq
    • one year ago
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    no problem, i hope you can find the answer to your question now

  7. anonymous
    • one year ago
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    IS IT C right

  8. aaronq
    • one year ago
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    \(\sf \huge \checkmark\)

  9. anonymous
    • one year ago
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    ^ ^

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