Anyone listen to zillakami?

A molecule is polar when the net dipole moment of molecule is zero. When an electronegative atom is attached to an electropositive atom then the electronegative atom pulls the shared pair of electrons more towards itself.

As a result, the movement of electrons is more towards the electronegative atom and the dipole moment becomes zero. This will also induce partial positive and partial negative charge on electropositive and electronegative atom.

On the other hand, $O_{2}, CO_{2}, and CH_{4}$ are covalent compounds and does not have a net zero dipole moment.

Thus, we can conclude that out of the given options $NH_{3}$ represents a polar molecule.

7 0

4 years ago

SpongeBob noticed that his favorite pants were not as clean as they used to be. His friend, Sandy, told him that he should try u

-BARSIC- [3]

Answer:

1) SpongeBob investigated whether Clean-O detergent is a good laundry soap. 3) the dependent variable is the color of the pants/how clean the pants were. 4) SpongeBob's conclusion should be that Clean-O detergent is not a good detergent.

Explanation:

You didn't have #2 - it was the same question as #1

4 0

4 years ago

Read 2 more answers

How many zinc atoms are contained in 3.75 moles of zinc?

bija089 [108]

<h3>Answer:</h3>

2.26 × 10²⁴ atoms Zn

<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> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Reading a Periodic Table
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.75 mol Zn (Zinc)

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

Avogadro's Number

<u>Step 3: Convert</u>

[DA] Set up: $\displaystyle 3.75 \ mol \ Zn(\frac{6.022 \cdot 10^{23} \ atoms \ Zn}{1 \ mol \ Zn})$
[DA] Multiply/Divide [Cancel out units]: $\displaystyle 2.25825 \cdot 10^{24} \ atoms \ Zn$

<u>Step 4: Check</u>

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

2.25825 × 10²⁴ atoms Zn ≈ 2.26 × 10²⁴ atoms Zn

3 0

3 years ago