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4 years ago

Four properties of water are listed.

Chemistry

2 answers:

velikii [3]4 years ago

6 0

The answer would be an.

IRISSAK [1]4 years ago

3 0

Answer:

B. 1 and 4

Explanation:

Chemical properties are those that cause the substance that reacts to undergo a chemical change. The product formed has completely different chemical property than the reactant. In a physical change the substance undergoes a physical change such as phase transition. In a physical change no new chemical substance is formed.

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Where are the electrons inside an atom?

Nataly [62]

Answer: B.They are arranged in energy levels

Explanation: Electrons orbit around the nucleus of an atom, and are not spread around equally throughout an atom because there are a different amount of electrons that can fit in each energy level or electron shell (both are the same thing). For example the first energy level can hold up to 2 electrons, the second shell can hold up to 8 electrons, the third can hold up to 18, and so on represented by the equation 2(n^2)

7 0

3 years ago

How many grams of molybdenum(Mo) are in 2.68E24 atoms of Mo?

loris [4]

<h3>Answer:</h3>

427 g Mo

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

<u>Chemistry</u>

<u>Atomic Structure</u>

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

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<h3>Explanation:</h3>

<u>Step 1: Define</u>

2.68E24 atoms Mo or 2.68 × 10²⁴ atoms Mo

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

Avogadro's Number

Molar Mass of Mo - 95.94 g/mol

<u>Step 3: Convert</u>

<u /> $2.68 \cdot 10^{24} \ atoms \ Mo(\frac{1 \ mol \ Mo}{6.022 \cdot 10^{23} \ atoms \ Mo} )(\frac{95.94 \ g \ Mo}{1 \ mol \ Mo} )$ = 426.966 g Mo

<u>Step 4: Check</u>

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

426.966 g Mo ≈ 427 g Mo

3 0

3 years ago

What occurs when a magnesium atom becomes a magnesium ion

Karo-lina-s [1.5K]

The electrons are lost.

4 0

3 years ago

Read 2 more answers

The table shows the properties of some organic compounds.

Shalnov [3]

Answer:

option C is correct

..............,

3 0

3 years ago

A mineral is described as "metallic." This description refers to its:

abruzzese [7]

Answer: properties

Explanation:

The element which has the properties

Mallablity

Ductility

Lusterous

High electric. Conductivity

High tensile strength is said to be metal.

8 0

3 years ago