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blsea [12.9K]
3 years ago
8

Is the valency of carbon 2 or 4​

Chemistry
2 answers:
Pavel [41]3 years ago
3 0

Answer:

4

<h3>explanation:</h3>

Carbon has four valence electrons and here a valence of carbon is four.

olga nikolaevna [1]3 years ago
3 0

Answer:

4

Explanation:

needs four electrons to complete its orbit

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Why is it difficult to undergo nucleophilic substitution in haloarene?​
goldenfox [79]

Answer:

In Haloarenes the C atom to which the X group is attached is SP2 hybridized thus it is become difficult to replace it by the Nucleophile. Since arenes and Vinyl halides are electron rich molecules due to presenceof n bonds, they repel Nucleophile attacking them.

8 0
3 years ago
How much heat is lost when 0.440 mol of steam condenses at 100 °C?
dusya [7]

Answer:

17,890 J

Explanation:

The amount of heat released by a gaseous substance when it condenses is given by the formula

Q=n\lambda_v

where

n is the number of moles of the substance

\lambda_v is the latent heat of vaporization

The formula can be applied if the substance is at its vaporization temperature.

In this problem, we have:

n = 0.440 mol is the number of moles of steam

\lambda_v=40,660 J/mol is the latent heat of vaporization of water

And the steam is already at 100C, so we can apply the formula:

Q=(0.440)(40660)=17,890 J

8 0
4 years ago
Ca3(PO4)2 + H2SO4 → CaSO4 + H3PO4<br><br> Balance this reaction if necessary
devlian [24]
<span>Ca3(PO4)2 + 3 H2SO4 = 3 CaSO4 + 2 H3PO4</span>
<span>Reaction type: double replacement
</span>
7 0
3 years ago
Read 2 more answers
PLEASE HELP 20 points
777dan777 [17]

  n = 1.5atm (15L) / .0821 (280k) = .98 mol NaCl

  NaCl = 22.99g Na + 35.45g Cl = 58.44g NaCl

  58.44g NaCl x .98 mol NaCl = 57.27g NaCl

Explanation:

hope you get it right :)

4 0
3 years ago
Tính [H] và [OH] của dung dịch HC1 0,1M? Tính pH của dung dịch?
Brrunno [24]

Answer:

po jakiemu to jest XD

Explanation:

po jakiemu to jest XD

3 0
3 years ago
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