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tatiyna
3 years ago
14

Describe a way to separate iron filings from sand.

Chemistry
2 answers:
nikklg [1K]3 years ago
8 0
Use a magnet to separate the iron from the sand.
Alexxandr [17]3 years ago
4 0
Spread out the iron fillings
then since iron is magnetic use a magnet to extract the iron fillings from the sand. if you want to separate the salt from the sand you add water to the sand mix it for a while and the salt will dissolve <span />
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Answer:

The molality of isoborneol in camphor is 0.53 mol/kg.

Explanation:

Melting point of pure camphor= T =179°C

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Depression in freezing point = \Delta T_f=?

\Delta T_f=T- T_f=179^oC-165^oC=14^oC

Depression in freezing point  is also given by formula:

\Delta T_f=i\times K_f\times m

K_f = The freezing point depression constant

m = molality of the sample

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We have: K_f = 40°C kg/mol

i = 1 (  organic compounds)

\Delta T_f=14^oC

14^oC=1\times 40^oC kg/mol\times m

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The molality of isoborneol in camphor is 0.53 mol/kg.

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