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2 years ago

What does h20 mean on the periodic elements chart

Chemistry

1 answer:

Paladinen [302]2 years ago

3 0

Answer:

The compound, H₂O, will not be found on the periodic table. This is because the periodic table only consists of individual elements. That being said, the elements found within H₂O are located on the periodic table. H₂O consists of hydrogen, denoted by the symbol "H", and oxygen, denoted by the symbol "O". The subscript (the 2) tells us that there are 2 hydrogen atoms located in the H₂O molecule.

Hydrogen is the first element listed on the periodic table and can be found in the top leftmost position. Oxygen is the eighth element on the periodic able and is located in the second row at the top right.

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What is the amount in moles 3.40 g Zn

Sidana [21]

<h3>Answer:</h3>

0.0520 mol 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

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

3.40 g Zn

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

Molar Mass of Zn - 65.39 g/mol

<u>Step 3: Convert</u>

Set up: $\displaystyle 3.40 \ g \ Zn(\frac{1 \ mol \ Zn}{65.39 \ g \ Zn})$
Divide: $\displaystyle 0.051996 \ mol \ Zn$

<u>Step 4: Check</u>

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

0.051996 mol Zn ≈ 0.0520 mol Zn

3 0

3 years ago

Which of the following factors does not determine the movement of particles in the atoms or molecules of a gas according to the

Ksenya-84 [330]

Answer:

type of particles

Explanation:

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4 years ago

During a laboratory experiment you discover that an enzyme-catalyzed reaction has a delta G of -20 kcal/mol. If you double the a

Ilia_Sergeevich [38]

Answer:

-20 kcal/mol

Explanation:

In a reaction, enzymes reduces the energy of activation, but they have no effect on the Gibb's free energy of reaction. The free energy of the product is the same as it would be without the enzyme. Thus, the enzyme does not affect the free energy of the reaction. Mathematically

Gibb free energy = Enthalpy - temperature x change in entropy

Note that from the relation above, enzyme is not a factor nor is activation energy a factor.

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3 years ago

LeAnn knows the speed of an airplane but she wants to find the velocity. What does she need to determine to find velocity?

SCORPION-xisa [38]

A.
The time it takes the airplane to move between two points

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3 years ago

Calculate the density (in g/mL) of an object that has a mass of 3.81 g and a volume of<br> 14.3 mL.

aksik [14]

Answer:

Density = M/V

so 3.81/14.3 .266g/ml

Explanation:

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3 years ago