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3 years ago

Is O2 a element or a compound

Chemistry

2 answers:

Dvinal [7]3 years ago

8 0

O2 is an element As it contains just one kind of atom, O2 is an element,

ArbitrLikvidat [17]3 years ago

5 0

O is an element. O2 is not an element. A compound is when a substance forms two or more elements that are chemically joined together. That is what O2 is so therefore, it is a compound. Hope this helps! :)

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Convert 5.8 km to the unit mm. <br> 0.0000058 mm <br> 0.0058 mm <br> 5,800 mm <br> 5,800,000 mm

spin [16.1K]

Its going to b 5,800,000 due to each Km being 1,000,000 Mm
Hope this helps :D

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3 years ago

Can someone solve #14 and #18?

Rudiy27

Answer:

14. the metal is tin which it density is equal 7.3g/cm^3

7 0

3 years ago

What is the molar mass of KOH?

Julli [10]

<h3>Answer:</h3>

56.11 g/mol

<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

<h3>Explanation:</h3>

<u>Step 1: Define</u>

[Compound] KOH

<u>Step 2: Identify</u>

[PT] Molar Mass of K - 39.10 g/mol

[PT] Molar Mass of O - 16.00 g/mol

[PT] Molar Mass of H - 1.01 g/mol

39.10 + 16.00 + 1.01 = 56.11 g/mol

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3 years ago

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Veseljchak [2.6K]

Answer:

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Explanation:

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2 years ago

student in chemistry 150-02 weighed out 55.5g of octane c8h18 and allowed it to react with oxygen, o2 the product formed were ca

Tasya [4]

Answer:

C8H8 + 10O2 → 8CO2 + 4H2O

Explanation:

unbalanced reaction:

C8H8 + O2 → CO2 + H2O

balanced for semireactions:

(1) 16H2O + C8H8 → 8CO2 + 40H+

(2) 10(4H+ + O2 → 2H2O)

⇒ 40H+ + 10O2 → 20H2O

(1) + (2):

balanced reaction:

⇒ C8H8 + 10O2 → 8CO2 + 4H2O

8 - C - 8

20 - O2 - 20

8 - H - 8

3 0

4 years ago