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Solnce55 [7]
2 years ago
6

Spanish/español: ¿por qué los elementos se combinan para para formar compuestos?

Chemistry
2 answers:
Svetach [21]2 years ago
8 0

Answer:

The answer is that compounds are formed when elements are joined and held together by strong forces called chemical bonds. Covalent bonds share electrons between atoms in order to fill their electron shells. In the compound, molecules are held together by the attraction between the nucleus and the shared electrons.

Explanation:

Hope this helps! <3

ch4aika [34]2 years ago
5 0
Elements naturally have an outer shell of electrons, called the valence shell. the electrons in this shell are called valence electrons. Most elements have an incomplete valence shell, which would be any number under 8, since a full shell of electrons needs 8. These elements will form bonds to either share or take/give electrons to another element in order for their outer shell to be full.
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n200080 [17]

Answer:

∴ Fractional distillation is the technique used to separate the fraction

Explanation:

A: Refinery gas

B: Gasoline fraction

C: Naphtha

D: Kerosene

E: Diesel Oil

F: Fuel oil fraction

G: Lubricating fraction

H: Bitumen

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2 years ago
A solution has a pH of 12. Is it considered an
Mila [183]

Answer:

Base

Explanation:

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2 years ago
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An object which allows light to show through it unaltered is called?​
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Transparency (also called pellucidity or diaphaneity) in the field of optics is the physical property of allowing light to pass through the material without significant light dispersion.
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3 years ago
Give me your best dark humor
Alexxandr [17]

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Explanation:

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2 years ago
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What mass of sulfur has to burn to produce 4.5L SO2 at 300°C and 101 kPa in the following reaction?s(s)+O2(g) SO,(g)
Alex_Xolod [135]
<span>Answer: option B. 3.07 g

Explanation:

1) given reaction:

S(s) + O₂ (g) → SO(g)

2) Balanced chemical equation:

</span><span>2S(s) + O₂ (g) → 2SO(g)

3) Theoretical mole ratios:

2 mol S : 1 mol O₂ : 2 mol SO

3) number of moles of 4.5 liter SO₂ at</span><span> 300°C and 101 kPa

use the ideal gas equation:

pV = nRT

with V = 4.5 liter
p = 101 kPa
T = 300 + 273.15 K = 573.15 K
R = 8.314 liter×kPa / (mol×K)

=> n = pV / (RT) =

n =  [101 kPa × 4.5 liter] / [8.314 (liter×kPa) / (mol×K)  × 573.15 K ]

n = 0.0954 mol SO

4) proportion with the theoretical ratio S / SO

 2 mol S                   x
-------------- = ----------------------
 2 mol SO      0.0954 mol SO

=> x = 0.0954 mol S.

5) Convert mol of S to grams by using atomic mass of S = 32.065 g/mol

mass = number of moles × atomic mass

mass = 0.0954 mol × 32.065 g/mol = 3.059 g of S

6) Therefore the answer is the option B. 3.07 g
</span>
8 0
3 years ago
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