Answer:
- Oil Energy is a Major Source of Pollution and Damage Made to the Environment Every Year.
- Oil Like the Other Fossil Fuels Is A Finite Resource.
- Emissions Produced by Oil Causes Acid Rain
-Plastic is One of the Products Obtained Through Oil Refining.
- Working in the Oil Sector Can Be a Dangerous Activity.
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Answer:
See explanation
Explanation:
Hydrogen has only one valence electron. Sometimes, hydrogen is included as part of group 1 or 17 in the periodic table. Is this correct? Well, the answer to this question is not so straight forward!
Let us remember that hydrogen forms a univalent positive ion H^+ just like the group 1 elements, but it also forms a univalent negative ion H^- just like group 17 elements. Also, hydrogen is a gas and forms a molecular diatomic compound just like group 17 elements. This is not the case with other group 1 elements. We can see that hydrogen is chemically and physically dissimilar to other group 1 elements hence one can logically argue against its inclusion in group 1. Also, it is not a halogen, so we can also argue against its inclusion in group 17.
However, it is convenient to include hydrogen in the main groups 1 or 17 when discussing its chemical properties in order to make it easier to assimilate. If we place hydrogen in group 1, we can understand that it forms univalent positive ions. Similarly, if we place it in group 17, we understand that it forms univalent negative ions.
Most times hydrogen is just written separately at the top right corner of the periodic table and not as a member of any group because of the issues outlined above.
There are 4 different products will be formed from a poorly planned crossed aldol addition.
In a crossed aldol condensation, two distinct ketone and aldehyde reactants are used. Due to the possibility of several enolate nucleophiles as well as multiple carbonyl electrophiles, similar reactions typically result in a variety of distinct condensation products.
Ethanol and propanol undergo cross-aldol condensation, which results in two products:
- one where ethanol serves as an enolate ion and the other where propanol serves as an enolate ion.
- 2-Methylbut-2-enal and Pent-2-enal are just the two cross-aldol derivatives.
Therefore, the correct answer will be option (d)
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Answer:
0.5 moles
Explanation:
At STP,
<u><em>Every 22.4 L of carbon dioxide contains 1 mole of gas.</em></u>
<u><em /></u>
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Solving :
⇒ 22.4 L : 1 mole
⇒ 22.4 × 0.5 : 1 × 0.5
⇒ 11.2 L : 0.5 moles
<h2>Answer:</h2>
The last statement is true. which is:
Mg is less reactive than Na because Mg has to lose one more electron than Na to complete its outermost shell.
<h3>Explanation:</h3>
Mg belongs to group II and Na belongs to group I.
Group II elements are less reactive than Group I elements. This is because it is more difficult to lose two electrons compared to losing just one electron.