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Maksim231197 [3]
3 years ago
15

Pls help ASAP will give brianlist

Chemistry
1 answer:
Damm [24]3 years ago
8 0

Answer:

I'm not 100% sure but I believe it is the first or last

there should be three y's and one x but I can't remember the order. my gut goes with the top one

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Give the electron confiuration of Chromium (Cr), atomic number 24.
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Assume the molality of isoborneol in your product is 0.275 mol/kg. What is the melting point of your impure sample given that th
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168°C is the melting point of your impure sample.

Explanation:

Melting point of pure camphor= T =179°C

Melting point of sample = T_f = ?

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\Delta T_f=i\times K_f\times m

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i = van't Hoff factor

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i = 1 (  non electrolyte)

\Delta T_f=1\times 40^oC kg/mol\times 0.275 mol/kg

\Delta T_f=11^oC

\Delta T_f=T- T_f

T_f=T- \Delta T_f=179^oC-11^oC=168^oC

168°C is the melting point of your impure sample.

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