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3 years ago

Why is the brcl molecules polar??

Chemistry

2 answers:

Dahasolnce [82]3 years ago

6 0

The electronegativity value of Br and Cl is 2.8 and 3.0 respectively.

The electrinegativity difference in the Br-Cl bond is 3.0 – 2.8 = 0.2

If the electronegativity difference is below 0.5 the covalent bind is nonpolar

If the electronegativity difference is between 0.5 and 2.0 the covalent bond is polar.

If the electronegativity difference is above 2.0 the bond is ionic

As the electronegativity difference is below 0.5 the Br-Cl covalent bond is nonpolar

tester [92]3 years ago

5 0

<span>Because there is a permanent dipole between the Br and Cl atom. The Cl atom has a higher electronegativity, so it will tend to pull the "shared" electrons formed in the bond to its pole, creating a permanent dipole and partial electron deficiency on the bromine atom.</span>

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weeeeeb [17]

Answer:

False

Explanation:

A liquid has a definite shape and takes on the volume of its container. A gas has both the shape and the volume of its container. The particles in a gas cannot be compressed into a smaller volume. Liquids tend to contract when heated.

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3 years ago

Is sponge cake a heterogeneous mixture

maxonik [38]

Answer:

though many may argue that cake batter is a homogeneous mixture because of its observable uniformity, we know it is heterogeneous. ... In other words, the mixture of ingredients from cake batter results in some chemical reactions here and there, but we are still left with a mixture of things that can be separated.

Explanation:

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3 years ago

How many moles of lead, Pb, are in 1.50 x 10^12 atoms of lead?

gulaghasi [49]

<h3>Answer:</h3>

2.49 × 10⁻¹² moles Pb

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Chemistry</u>

<u>Atomic Structure</u>

Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<h3>Explanation:</h3>

<u>Step 1: Define</u>

1.50 × 10¹² atoms Pb

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

Set up: $\displaystyle 1.50 \cdot 10^{12} \ atoms \ Pb(\frac{1 \ mol \ Pb}{6.022 \cdot 10^{23} \ atoms \ Pb})$
Multiply: $\displaystyle 2.49087 \cdot 10^{-12} \ moles \ Pb$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

2.49087 × 10⁻¹² moles Pb ≈ 2.49 × 10⁻¹² moles Pb

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3 years ago

What elements make up water?

Sveta_85 [38]

Water molecules are made of hydrogen atoms and one oxygen atom.

Hope this helped!

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3 years ago

Read 2 more answers

What is a <br>atom<br>protons<br><br>neutrons<br><br>electrons

choli [55]

Atoms are made of extremely tiny particles called protons, neutrons, and electrons.
Protons and neutrons are in the center of the atom, making up the nucleus.
Electrons surround the nucleus.
Protons have a positive charge.
Electrons have a negative charge.
The charge on the proton and electron are exactly the same size but opposite.
Neutrons have no charge.
Since opposite charges attract, protons and electrons attract each other.

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3 years ago