Which of the following is a polar molecule?

Please help!!<br> I don’t understand

laiz [17]

<h3>Answer:</h3>

150 g Si

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

<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>

Use Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

[Given] 3.2 × 10²⁴ atoms Si

[Solve] grams Si

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

Avogadro's Number

[PT] Molar Mass of Si - 28.09 g/mol

<u>Step 3: Convert</u>

[DA] Set up: $\displaystyle 3.2 \cdot 10^{24} \ atoms \ Si(\frac{1 \ mol \ Si}{6.022 \cdot 10^{23} \ atoms \ Si})(\frac{28.09 \ g \ Si}{1 \ mol \ Si})$
[DA] Multiply/Divide [Cancel out units]: $\displaystyle 149.266 \ g \ Si$

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. Instructed to round to 2 sig figs.</em>

149.266 g Si ≈ 150 g Si

4 0

3 years ago

When matter is transformed from the liquid state to the gas state, the distance between the particles _______ and the attractive

bulgar [2K]

B. increase; decrease or are absent

In a liquid, the particles move around more than a solid, but way less than in a gas because there isn't that much space between particles.

When matter is a gas, the particles tend to move in a larger area and they tend to get very far away from each other. So, the space between particles increase and the attraction forces decrease.

4 0

4 years ago

Based on the information in the graph, what is the relationship between air temperature and the amount of water vapor that the a

NeTakaya

Answer:

1 i think

Explanation:

5 0

3 years ago

2 Students were asked to identify the location of elements in the periodic table based on clues

rjkz [21]

Answer: