2 years ago

Whats principle of Aristotle's do scientist use today

Chemistry

1 answer:

Darina [25.2K]2 years ago

6 0

His observation and census.

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Using the correct answer from Part B, calculate the volume of a rectangular prism with a length of 5.6 cm, a width of 2.1 cm, an

Alenkinab [10]

5.6 x 2.1 x 6.6 = 77.616 cm3

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3 years ago

The difference between the boiling point of a pure solvent and the boiling point of a solution of a nonelectrolyte in the same s

Sati [7]

Answer: A) Boiling-Point Elevation

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3 years ago

Someone answer these both for me

Julli [10]

Answer:

a b

Explanation:

I think so take it with a grain of salt

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3 years ago

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

Which change would increase the pressure exerted by a gas?

Gelneren [198K]

Answer:

C - raising the temperature of a gas

Explanation:

as you raise temperature, kinetic energy rises, and so does pressure

7 0

3 years ago