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algol [13]
3 years ago
10

When oxygen and aluminum form an ionic compound, what is the formula? (2 points)

Chemistry
2 answers:
puteri [66]3 years ago
4 0

The correct answer is

D .al2O3

Explanation:

The offense in electronegativity is subject for the ionic bonds in aluminum and oxygen, Ionic bonds are created between cations and anions. A cation is formed when a metal ion spends a valence electron while an anion is produced when non-metal gains a valence electron. They both achieve a more stable electronic arrangement through this change.

dezoksy [38]3 years ago
3 0
The answer is  D-al2O3
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Identify and name the functional<br> present in (i) C₂ H₂ (ii). CH₃ CH₂OH.
Minchanka [31]

Answer:

I)Acetylene

II)2-Methyl-1-butanol

Explanation:

I)appears as a colorless gas with a faint garlic-like odor. Easily ignited and burns with a sooty flame. Gas is lighter than air.

6 0
3 years ago
Find if the example is correct or not and explain using CER please. Will give 5/5
ELEN [110]

The Lewis structure the student drew is incorrect. The total number of electrons in bonds and lone pairs is equal to the total number of valence electrons available, then a valid Lewis structure is produced.

The correct structure is the following:

The structure that was drawn by the student was incorrect because the total number of electrons around Oxygen were incorrect, there were 6 instead of 8, which was against the octet rule. The correct structure should have 8 electrons around each atom.

5 0
1 year ago
Which represents the self ionization of water at 25 degrees
gayaneshka [121]
This question comes with four answer choices:

<span>A. H2O + H2O ⇄ 2H2 + O2

B. H2O + H2O⇄  H2O2 + H2

C. H2O + H2O ⇄ 4H+ + 2O2-

D. H2O + H2O ⇄  H3O+ + OH-

Answer: option </span><span>D. H2O + H2O ⇄  H3O+ + OH-

(the +sign next to H3O is a superscript, as well as the - sing next to OH)

Explanation:

The self-ionization of water, or autodissociation, produces the two ions H3O(+) and OH(-). The presence of ions is what explain the electrical conductivity of pure water.

</span><span>In this, one molecule of H2O loses a proton (H+) (deprotonates) to become a hydroxide ion, OH−. Then, he <span>hydrogen ion, H+</span>, immediately protonates another water molecule to form hydronium, H3O+.
</span>
7 0
3 years ago
Evaluate (714 mm )/(37 s ) to three significant figures and express answer in si units using an appropriate prefix.
romanna [79]

The SI base units for length is meter (m) and for time is seconds (s).

The given ratio is \frac{714 mm}{37 s}

\frac{714 mm}{37 s} = 19.297 mm/s \simeq 19.3 mm/s

Converting mm/s to m/s as:

Since, 1 mm/s = 0.001 m/s

So, 19.3 mm/s = 0.0193 m/s

Since, zeroes to the left side of the non-zero number are not significant hence, the evaluation of \frac{714 mm}{37 s} to three significant figures and answer in SI units is 0.0193 m/s.

5 0
4 years ago
Why is steam distillation prefered over fractional distillation for the extraction of essencial oils?​
frez [133]

Answer:

Because , the advantage of steam distillation over simple distillation is that the lower boiling point reduces decomposition of temperature-sensitive compounds. Steam distillation is useful for the purification of organic compounds, although vacuum distillation is more common

Explanation:

7 0
3 years ago
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