What does the atomic number mean or represent? also how do i make someone brainliest

Which component of air is remove when air is pass through aqueous sodium hydroxide?

nata0808 [166]

Answer:
Carbon dioxide (CO₂) of air is remove when air is pass through aqueous sodium hydroxide.

Detail:
This method for capturing CO₂ from air or from any other source was developed by two scientists names as Lackner and Zeman. This methodology is very helpful from stopping CO₂ to enter our atmosphere and result in Global warming. The reaction of NaOH with CO₂ is as follow,

2 NaOH + CO₂ → Na₂CO₃ + H₂O

This is a type of liquid gas reaction and evolves around 5.3 kJ/mol heat.

7 0

3 years ago

The spaces between the particles are the ____ in solids, a little more in liquids, and the maximum in gases.

olga_2 [115]

Minimum, because the particles are all tightly packed together

7 0

3 years ago

How many atoms are in a 1.8 mol sample of Magnesium (Mg)?

Gnom [1K]

Answer:

1.1 × 10²⁴ atoms Mg

General Formulas and Concepts:

Atomic Structure

Moles
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

Identify

[Given] 1.8 mol Mg

[Solve] atoms Mg

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

[DA] Set up: $\displaystyle 1.8 \ mol \ Mg(\frac{6.022 \cdot 10^{23} \ atoms \ Mg}{1 \ mol \ Mg})$
[DA] Multiply [Cancel out units]: $\displaystyle 1.08396 \cdot 10^{24} \ atoms \ Mg$

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

1.08396 × 10²⁴ atoms Mg ≈ 1.1 × 10²⁴ atoms Mg

5 0

3 years ago

Read 2 more answers

How many grams of silver chloride can be produced by reacting excess silver nitrate with 2.4 moles of zinc chloride? _____AgNO3

worty [1.4K]

<h3>Answer:</h3>

690 g AgCl

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

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Chemistry

Atomic Structure

Reading a Periodic Table
Writing Compounds

Stoichiometry

Using Dimensional Analysis
Limiting Reactant/Excess Reactant

<h3>Explanation:</h3>

Step 1: Define

[RxN - Unbalanced] AgNO₃ + ZnCl₂ → AgCl + Zn(NO₃)₂

↓

[RxN - Balanced] 2AgNO₃ + ZnCl₂ → 2AgCl + Zn(NO₃)₂

[Given] 2.4 mol ZnCl₂

[Solve] x g AgCl

Step 2: Identify Conversions

[RxN] 1 mol ZnCl₂ → 2 mol AgCl

[PT] Molar Mass of Ag - 107.87 g/mol

[PT] Molar Mass of Cl - 35.45 g/mol

Molar Mass of AgCl - 107.87 + 35.45 = 143.32 g/mol

Step 3: Stoich

[DA] Set up: $\displaystyle 2.4 \ mol \ ZnCl_2(\frac{2 \ mol \ AgCl}{1 \ mol \ ZnCl_2})(\frac{143.32 \ g \ AgCl}{1 \ mol \ AgCl})$
[DA] Multiply/Divide [Cancel out units]: $\displaystyle 687.936 \ g \ AgCl$

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

687.936 g AgCl ≈ 690 g AgCl

5 0

3 years ago

Why does electronegativity increase as you move through a period on the periodic table?

velikii [3]

Answer:the size of the atom increases is your answer have a great day

Explanation:

5 0

3 years ago