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3 years ago

________________ structure controls the physical properties of elements. Nucleus Electron

2 answers:

7 0

Electron is correct answer.

Electron <span>structure controls the physical properties of elements.

Hope it helped you.

-Charlie

Thanks!</span>

AnnyKZ [126]3 years ago

6 0

The answer is Electron.
Hope this helps!

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Which reaction type is the following: AgF + CaCl2 --> AgCl + CaF2

nevsk [136]

Explanation:

${\small{\underline{\bf{\red{answer...}}}}} \\ \\$

$\small\mathfrak\purple{Double \: displacement \: reaction} \\ \\ \small\mathfrak\orange{hope \: it \: helps...}$

6 0

2 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.

8 0

2 years ago

Explain how the elimination of a predator from an ecosystem might result in starvation amongst its prey species.

hammer [34]

If there weren't any predators, the population of prey would increase and they would starve due to too many mouths to feed.

6 0

2 years ago

Electromagnetic waves do not need to carry blank. Electromagnetic waves carry enough through matter, but they also carry enough

Setler [38]

Answer: what? whats the quiestion?

Explanation:

6 0

2 years ago

The Lewis dot model of a molecule is shown.

Katen [24]

Answer:

Carbon has a total of four bonded pairs of electrons around it.

Explanation:

Since there are four "lines" around the C (which stands for Carbon), we can conclude that Carbon has a total of four bonded pairs of electrons around it.

3 0

3 years ago