3 years ago

Mechanical energy is the energy of?

Chemistry

1 answer:

babymother [125]3 years ago

6 0

Answer:

Kinetic energy

Explanation:

energy remains constant because the decrease occurs in the potential energy of an object during falling equals the increase in its kinetic energy. So mechanical energy is the energy of Kinetic energy.

Hope this helped!

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Calculate the molality of isoborneol in the product if, a) the melting point of pure camphor is 179°C and the melting point take

tresset_1 [31]

Answer:

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

Explanation:

Melting point of pure camphor= T =179°C

Melting point of sample = $T_f$ = 165°C

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

i = van't Hoff factor

We have: $K_f$ = 40°C kg/mol

i = 1 ( organic compounds)

$\Delta T_f=14^oC$

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

$m=\frac{14^oC}{1\times 40^oC kg/mol}=0.35 mol/kg$

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

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3 years ago

Mechanical energy is the energy of?￼

Mechanical energy is the energy of?