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rusak2 [61]
3 years ago
14

Groups or families in the periodic table have what in common

Chemistry
2 answers:
sammy [17]3 years ago
7 0
Each column is called a group<span>. The elements in each </span>group have<span> the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons.</span>
mrs_skeptik [129]3 years ago
6 0
Elements in each group have the same number of electrons in the last ring. They are also called Valence Electrons.
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What type of reaction is: CaO + H2O -&gt; Ca(OH)2? A. Combustion B. Synthesis C. Double Replacement D. Decomposition
12345 [234]

Answer:

The reaction is B. Synthesis

Explanation:

In the case of this reaction, it corresponds to a synthesis where 2 compounds (calcium oxide and water) are combined to form a new one (calcium hydroxide).

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When the gases dihydrogen sulfide and oxygen react, they form the gases sulfur dioxide and water vapor. (How would this be writt
strojnjashka [21]
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3 years ago
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A woman is brought into the emergency room experiencing nausea and vomiting. She is also hyperventilating. She says that she ing
Keith_Richards [23]

Answer:

Protonated form: 96.87%

Unprotonated form: 3.13%

Explanation:

To find the percentage of protoned and unprotoned forms of salicylic acid we must use Henderson-Hasselbalch equation:

pH = pKa + log [A⁻] / [HA]

<em>Where pKa of salicylic acid is 3.49; [A⁻] is the unprotonated form and [HA]:</em>

<em />

2.0 = 3.49 + log [A⁻] / [HA]

0.03236 = [A⁻] / [HA] <em>(1)</em>

And as:

[A⁻] + [HA] = 100% <em>(2)</em>

<em></em>

Replacing (2) in (1):

0.03236 = 100 - [HA] / [HA]

0.03236 [HA] = 100 - [HA]

1.03236[HA] = 100

<h3>[HA] = 96.87%</h3>

And [A⁻]:

[A⁻] = 100 - 96.87

<h3>[A⁻] = 3.13%</h3>

<em></em>

3 0
3 years ago
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