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coldgirl [10]
2 years ago
5

Help meeeeehahahshshs

Chemistry
1 answer:
natka813 [3]2 years ago
7 0
What grade are you in I’m in 9th ;-;
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How can we obtain Salicyaldehyde? Give reactions also
Snezhnost [94]

Salicaldehyde is formed by reimer Riemann reaction in which phenol and chloroform are heated together with sodium hydroxide or pottasium hydroxide yeild salicaldehyde.

C6H5OH+CH3Cl ----------> C7H6O2

KOH

It is also prepared by corresponding phenol by duff reaction.


4 0
2 years ago
Is burning sugar a chemical or physical change? Please provide explanation
solong [7]

Answer:

It is a chemical change

Explanation:

the reason is because the will not be able to materialize back into it's original form.

6 0
3 years ago
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The following Lewis diagram represents the valence electron configuration of a main-group element. This element is in group 2A A
Paraphin [41]

<u>Answer:</u> The symbol of the ion formed is Ca^{2+}

<u>Explanation:</u>

An ion is formed when a neutral atom looses or gains electrons.

  • When an atom looses electrons, it results in the formation of positive ion known as cation.
  • When an atom gains electrons, it results in the formation of negative ion known as anion.

Electronic configuration is defined as the representation of electrons around the nucleus of an atom.

Number of electrons in an atom is determined by the atomic number of that atom.

The element present in Group 2-A and in period 4 is Calcium (Ca)

Electronic configuration of Ca atom:  1s^22s^22p^63s^23p^64s^2

This atom will loose 2 electrons to attain stable electronic configuration similar to Argon element (noble gas)

The electronic configration of Ca^{2+}\text{ ion}=1s^22s^22p^63s^23p^6

Hence, the symbol of the ion formed is Ca^{2+}

4 0
3 years ago
Which of the following acts as a catalyst in catalytic converters?
yaroslaw [1]

Answer: B. Metal

Explanation: The catalyst used in the converter is mostly a precious metal such as platinum, palladium and rhodium Hope This Helped (=^・-・^=)

4 0
2 years ago
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Electrons spill in shells in the nucleous the closest shell (n=1) can contain the maximum of. Electrons
stiks02 [169]
The answer is 2 electrons I believe!
8 0
3 years ago
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