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tatyana61 [14]
3 years ago
5

HELP FAST ILL GIVE BRAINLIEST IF CORRECT PLS PLS IM STRUGGLING

Chemistry
1 answer:
sesenic [268]3 years ago
4 0
No it does not represent an isotope. The number of neutrons changes in an isotope, not the number of electrons. 
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Which statement is true about the electrons in each polar bond of a water molecule?
Greeley [361]

They are more attracted by the oxygen atom than by the hydrogen atom.

Explanation:

In the polar bond of water which is made up of hydrogen and oxygen atoms, the shared electrons are more attracted by the oxygen atom than by the hydrogen atom.  

The interatomic bond in water is a polar covalent bond.  

In this bond type, two species shares their valence electrons.  

The bond usually occurs between non-metals with an electronegativity difference that is small.

Oxygen is more electronegative compared to hydrogen.

  • This implies that oxygen pulls the electron more closely to itself since it has a greater affinity.
  • This leaves a partial negative charge on oxygen and a positive charge on hydrogen.
  • The molecule is said to be polar covalent.

learn more:

Covalent bond brainly.com/question/5258547

#learnwithBrainly

5 0
3 years ago
Read 2 more answers
Write a condensed structural formula for the repeat unit of the Kevlar molecule
shusha [124]

Explanation:

Kevlar is a fiber which is used in making of bullet proof vests and armors. It is a co-polymer which is formed by condensing two organic molecules 1,4-phenylene-diamine and terephthaloyl chloride.

NH_2C_6H_4NH_2+Cl-(CO)-C_6H_4-(CO)-Cl\xrightarrow[-2HCl]{ }

                      NH_2-C_6H_4-NH-CO-C_6H_4-COOH

For Structure refer to image attached.


4 0
3 years ago
Read 2 more answers
If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form
tigry1 [53]

Answer:

709 g  

Step-by-step explanation:

a) Balanced equation

Normally, we would need a balanced chemical equation.

However, we can get by with a partial equation, as log as carbon atoms are balanced.

We know we will need an equation with masses and molar masses, so let’s <em>gather all the information</em> in one place.  

M_r:    30.07          236.74

           C₂H₆ + … ⟶ C₂Cl₆ + …  

m/g:    90.0

(i) Calculate the moles of C₂H₆

n = 90.0 g C₂H₆  × (1 mol C₂H₆ /30.07 g C₂H₆)

  = 2.993 mol C₂H₆

(ii) Calculate the moles of C₂Cl₆

The molar ratio is (1 mol C₂Cl₆/1 mol C₂H₆)

n = 2.993 mol C₂H₆ × (1 mol C₂Cl₆/1 mol C₂H₆)

  = 2.993 mol C₂Cl₆

(iii) Calculate the mass of C₂Cl₆

m = 2.993 mol C₂Cl₆ × (236.74 g C₂Cl₆/1 mol C₂Cl₆)

m = 709 g C₂Cl₆

The reaction produces 709 g C₂Cl₆.

6 0
3 years ago
How many atoms are in 2.5mol of sodium
IgorLugansk [536]

Answer:

1024 sodium atoms.

6 0
3 years ago
Compute the ionization energy for a single atom of hydrogen
cricket20 [7]
The ionization energy<span> for </span>hydrogen<span> is 1312 kilojoules per mole. This is the same ... Electrically neutral </span>atoms<span> include a </span>single<span> proton and electron held together.</span>
6 0
3 years ago
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