Hello, There!
<h2>Question</h2>
Atom
Atomic theory of atoms:
Element:
Gas:
Liquid:
Magnetic field:
Particle:
Phase:
Plasma:
Scientific theory:
Solid:
Write the Meanings
<h2>
Answer</h2>
Atom: the basic unit of an element
Atomic theory of atoms: a theory that states that all matter is made of atoms that cannot be divided or destroyed
Element: a substance that cannot be broken down into a simpler substance
Gas: the state of matter that does not have a definite shape or a definite volume
Liquid: the state of matter that has an indefinite shape but a definite volume
Magnetic field: a region around a magnetic material or moving electric charge
Particle: a tiny piece of matter
Phase: a unique form of the existence of matter
Plasma: an ionized gas of positively and negatively charged particles
Scientific theory: an explanation for some naturally occurring event, developed from extensive observations, experimentation, and reasoning
Solid: the state of matter that has a definite shape and volume
Therefore, I hope this helps And Good Luck!
<h3>
Answer:</h3>
0.239 mol Sm(NO₃)₃
<h3>
General Formulas and Concepts:</h3>
<u>Math</u>
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Chemistry</u>
<u>Atomic Structure</u>
- Reading a Periodic Table
- Moles
<u>Stoichiometry</u>
- Using Dimensional Analysis
<h3>
Explanation:</h3>
<u>Step 1: Define</u>
[Given] 80.3 g Sm(NO₃)₃
[Solve] moles Sm(NO₃)₃
<u>Step 2: Identify Conversions</u>
[PT] Molar Mass of Sm - 150.36 g/mol
[PT] Molar Mass of N - 14.01 g/mol
[PT] Molar Mass of O - 16.00 g/mol
Molar Mass of Sm(NO₃)₃ - 150.36 + 3[14.01 + 3(16.00)] = 336.39 g/mol
<u>Step 3: Convert</u>
- [DA] Set up:

- [DA] Divide [Cancel out units]:

<u>Step 4: Check</u>
<em>Follow sig fig rules and round. We are given 3 sig figs.</em>
0.238711 mol Sm(NO₃)₃ ≈ 0.239 mol Sm(NO₃)₃
The physical property you measured is the boiling point of the liquid.
Therfore, if the liquid has a boiling point of 100°C, it turns from liquid state to vapor when you heat it up to 100°C.
To conclude, The liquid should be pure water. Because only pure water has a boiling point of 100°C, using this physical property, we can test whatever liquid ans see if it's pure water or not, this test is called the boiling point test.
Answer:
2.05 × 10²³ formula units
Explanation:
Given data:
Mass of AgF = 43.15 g
Number of formula units = ?
Solution:
Number of moles of AgF:
Number of moles = mass/ molar mass
Number of moles = 43.15 g/ 126.87 g/mol
Number of moles = 0.34 mol
Now Number of formula units will be determine by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number
1 mole = 6.022 × 10²³ formula units
0.34 mol × 6.022 × 10²³ formula units
2.05 × 10²³ formula units