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yanalaym [24]
3 years ago
8

What is the difference between minerals and rocks?

Chemistry
1 answer:
Natasha2012 [34]3 years ago
7 0

What's the difference between rocks and minerals?A mineral is a naturally occurring, inorganic solid with a definite chemical composition and a crystalline structure formed by a geological processes. A rock is an aggregate of one or more minerals where as a rock may also include organic remains and mineraloids.

I hope this helps

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How did the rate of the reaction change over time in the control reaction?
sertanlavr [38]
The control reaction leveled Off
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Crude oil is a mixture of many liquids. The crude enters the bottom of a tall column where it's heated the substances rise up th
boyakko [2]
Hi, sorry this is late and you most likely no longer need it but the answer to this question is the Third one.. Boiling point.

Hopefully this helps somebody :)
4 0
3 years ago
What advice would you give to your friend who has been suffering from domestic violence​
kap26 [50]

Answer:

the advices are,

1. i would say him or her to give all information about not to do domestic violence who has doing it.

2. i would say him/ herto be strict towards the domestic violence.

3. i would suggest him or her to raise voice aganist towards the domestic violence.

5. i would suggest him or her to negotiate to them for theirbasic rights.

6. if its not possible then i would suggest him or her to complain to the police.

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6 0
3 years ago
Explain in detail what information can be learn about atoms of different elements by examining the periodic table. For the maxim
pav-90 [236]

Answer:

  • See below this long answer.

Explanation:

These are the main features of the periodic table that you will be able to relate with some property trends of the atoms like size, energy levels, valence electrons, electronegativity, and ionization energy.

<u>A) Features:</u>

1. Elements are arranged in increasing order of atomic number, i.e. number or protons.

2. Since atoms are neutrals, the number of electrons equals the number of protons, and, as result, the elements are arranged in increasing order of number of electrons.

3. The elements are arranged in 18 columns and 7 rows.

4. The rows are named period and correspond to the principal energy level (n): first row corresponds to n = 1, second row corresponds to n = 2, third to n = 3, and so on up to n = 7. The number of elements in each period are:

Period 1, n = 1, 2 elements

Period 2, n = 2, 8 elements

Period 3, n = 3, 8 elements

Period 4, n = 4, 18 elements

Period 5, n = 5, 18 elements

Period 6, n = 6, 32 elements (this includes the 14 lanthanides)

Period 6, n = 7, 32 elements (this includes the 14 lanthanides)

That makes a total of 118 elements.

5. The columns are named groups and they indicate the number of valence electrons

Group 1: 1 valence electron

Group 2: 2 valence electrons

Group 13: 3 valence electrons

Group 14: 4 valence electrons

Group 15: 5 valence electrons

Group 16: 6 valence electrons

Group 17: 7 valence electrons

Group 18: 8 valence electrons

Groups 3 through 12 includ the transition metals and due they have subshells that are not completely filled, their valence electrons vary.

More like a reference than as a rule these are the number of valence electrons for these groups.

Group 3: 3 valence electrons

Group 4: 2-4 valence electrons

Group 5: 2-5 valence electrons

Group 6: 2-6 valence electrons

Group 7: 2-7 valence electrons

Group 8: 2-3 valence electrons

Group 9: 2-3 valence electrons

Group 10: 2-3 valence electrons

Group 11: 1-2 valence electrons

Group 12: 2 valence electrons

<u>B) Property trends</u>

<u>1. Atomic radius (size)</u>

<u />

  • Down a period (from left to right): due to the increase of the positive charge (number of protons) while the main energy level (n) does not change, the electrons in the valence shell feel a stronger atraction to the nucleus causing that the atomic radius decrease from left to right.

  • Down a group (top to bottom): due to the increase of the main energy level, the outermost orbital is bigger and the atoms become bigger. Thus the trend is that the atomic radius increase when you go down a group.

<u>2. First ionization energy</u>

  • Down a period (from left to right): due to the increase of the nuclear charge (such as explained above) the greater attractive force makes that, in general, the first ionization energy increase from left to right.

  • Down a group (top to bottom): due to the increase in the size of the atom, , generally, the energy to remove an electron from the outermost shell, decrease.

<u>3. Electronegativity</u>

<u />

This is the relative ability to atract electrons in a covalent bond. It increases from left to right and from bottom to top: the most electronegative atoms is fluor.

3 0
3 years ago
What is the freezing point of a solution made from 22.0 g of octane (c8h18) dissolved in 148.0 g of benzene? (for benzene, freez
cluponka [151]

The freezing point of a solution is -1.16°C

Calculation,

The equation which give relation between freezing point depletion and molality is,

ΔT_{f}  = K_{f} .m      ... (i)

  • ΔT_{f} is change in the freezing point of the solvent .
  • K_{f} of benzene = 5.12°C/m
  • m is molality of the solution

Moles of the solute = 22.0 g / 114.23 g/mole = 0.193 mole

Mass of the solvent in g = 148 g

Mass of the solvent in kg = 0.148 kg

Molality = 0.193 mole/ 0.148 kg = 1.3 m

Now, after putting the value of  K_{f} and m in equation (i) we get

ΔT_{f}  = K_{f} .m  

ΔT_{f}= 5.12°C/m×1.3 m = 6.66°C

ΔT_{f}=  T_{f} (solvent) - T_{f} (solution)

T_{f} (solution) = T_{f} (solvent)  -ΔT_{f}= 5.5 °C - 6.66°C = -1.16°C

The freezing point of a is -1.16°C

To learn about freezing point

brainly.com/question/3121416

#SPJ4

7 0
2 years ago
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