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Furkat [3]
3 years ago
8

Can you please answer questions regarding valence electrons?

Chemistry
1 answer:
Natasha2012 [34]3 years ago
4 0
Phosphorus has 5 valence
valence electrons is located to their group#
yes because of TAVE available valence electrons
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What is Acid and any type of acid​
finlep [7]

Answer:

Acid is the substance which gives H+ ions when dissolved in an aqueous solution and tastes sour.

Types of acid

  1. Strong acid
  2. Weak acid
6 0
3 years ago
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22. Which one of the following processes has a negative value for AH°?
ss7ja [257]

Answer:

C

Explanation:

A negative deltaH means that the reaction has to give up heat in order to happen. You have to treat deltaH as a reactant. So the question is do you need to add heat to the reactants to make the products. If you do, deltaH is plus.

Heat is required to make a solid go to a gas. deltaH is plus. A is not the answer.

A lot of heat is required for B (something like 400 Kj / mole. Like A, deltaH is plus and B is not the answer.

C: The liquid has to give up heat in order for the this reaction to take place. C is the answer.

D requires heat. It is not the answer.

4 0
4 years ago
Question is above pls help<br>A)2<br>B)3<br>C)4<br>D)5​
zvonat [6]

Answer:

5 will come in blank

4KMnO₄ ----------> 2K₂O + 4MnO + 5O₂

Explanation:

Reaction:

4KMnO₄ ----------> 2K₂O + 4MnO + ____O₂

this reaction is the dissociation reaction in which KMnO₄ is break down into its component.

KMnO₄ upon dissociation gives Potassium oxide, manganese oxide and liberate oxygen

Balance Chemical Equation:

A balanced chemical equation is that in which the the number of the reactant atoms equal to the number of the product atom.

For example if the oxygen at the reactant side is 4, the number of oxygen should be 4 on the product side.

So for this purpose  we have to balnce the reaction and number of atoms on each side of the arrow

if we see the given Equation

Numbers of atom on reactant Side:

K = 4

Mn = 4

O = 16

Numbers of atom on reactant Side:

K = 4

Mn = 4

O = 6 instead of blank oxygen molecule

so from the above data we have 10 oxygen less.

If we put the 5 in the blank then we will have 10 oxygen and equation will be balanced

So the balanced Equation will be

4KMnO₄ ----------> 2K₂O + 4MnO + 5O₂

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3 years ago
Why do giraffes have long necks that allow them to eat leaves in trees? A. for acquiring energy
yan [13]
It could be either A or B hope this helps
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4 years ago
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The columns in the periodic table are called groups. What do the elements in Group 17 have in common
Kryger [21]

Answer:

They all have 7 valence electrons on it's outer shell.

4 0
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