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bekas [8.4K]
3 years ago
5

Classifying Chemical Reactions

Chemistry
1 answer:
olga2289 [7]3 years ago
5 0

Answer:

chemestry

Explanation:

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Is there a way to tell whether or not to put two double bonds or not. For example SeS2 seems to work if it has two double bonds
Nina [5.8K]
Your first step should be to analyse the compound. For example, if the compound is carbon, you know it always has a valence of four, so, if it has a formula C2H4 (ethylene) it obviously has a double bond. There are difficulties here because benzene C6H6 can be considered to have 6 1.5 C-C bonds, being aromatic.

A second step is to look at its structure. Double bonds are traditionally shorter than single bonds; triple bonds shorter still. Covalent bonds do have typical lengths, nevertheless you can still have problems.

<span>A third step is to consider reactivity. For example, if you have a C=C double bond, you can add, say, bromine to it Thus C2H4 gives C2H4Br2, and by adding two bromine atoms you know you have one double bond. Again, benzene becomes an awkward molecule, but because of this, you know benzene does not have double bonds in the traditional sense</span>
8 0
3 years ago
? Question
DedPeter [7]

Many of the men may believe that they are fair and unbiased against women.

Many of the women may already believe that they face biases.

<h3>What is confirmation bias ?</h3>

The propensity to seek for, understand, favor, and remember information that supports or confirms one's preexisting opinions or values is known as confirmation bias. People exhibit this bias when they choose facts that support their opinions while rejecting those that contradict them or when they interpret ambiguous facts as supporting their preexisting beliefs. Although confirmation bias cannot be completely avoided, it can be controlled, for instance, by critical thinking education and training.

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7 0
2 years ago
6 How many moles are in a 321 g sample of magnesium?
Tatiana [17]

Answer:

13.4mol of Mg

Explanation:

Given parameters:

Mass of magnesium = 321g

Unknown:

Number of moles  = ?

Solution:

The number of moles of a substance is given as;

  Number of moles  = \frac{mass}{molar mass}  

 Molar mass of Mg = 24g/mol

 Insert the parameters and solve;

        Number of moles  = \frac{321}{24}   = 13.4mol of Mg

3 0
3 years ago
__________, a colligative property, is the difference between the freezing temperature of a pure solvent and the freezing point
PilotLPTM [1.2K]
<span>Freezing-point depression.</span>
8 0
3 years ago
To what temperature must 7. 50 moles of a gas have to be heated in a 20L container in order for it to exert a pressure of 6. 50
givi [52]

Answer:

<em>21.14 K</em>

Explanation:

<em>We know the Ideal Gas Equation is :-</em>

<em>PV = nRT</em>

<em>=> T = PV/nR</em>

<em>=> T = 6.5 x 20 / 7.5 x 0.082</em>

<em>=> T = 130 / 6.15</em>

<em>=> T = 21.14 K</em>

6 0
2 years ago
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