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marshall27 [118]
3 years ago
7

Is marble a compound or element?​

Chemistry
2 answers:
Vesna [10]3 years ago
7 0

Answer:

compound

Explanation:

"Marble is typically more than 95% calcium carbonate, perhaps even 99% calcium carbonate, and calcium carbonate is a compound. Marble has a good claim to be recognized as a compound."

vekshin13 years ago
6 0

Answer: Element

Explanation: No, marble is not a compound, because for a rock to be called marble other characteristics, beyond the chemical composition, have to have specific values. But marble is made up of only one compound, calcium carbonate. Colored marbles do contain small amounts of other chemicals.

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Compounds are different than elements because compounds are–
Andrei [34K]

Answer: Compound are different than elements because compounds are combinations of 2 or more elements.

6 0
3 years ago
Which of the following lists contains only elements?
Alexxandr [17]
C. air, fire, water, earth. 4 elements
5 0
3 years ago
Draw the lewis structure for the molecule ch2chch3. how many sigma and pi bonds does it 30) contain
juin [17]
Answer:
            1-Propene has eight sigma bonds and one pi bond.

Explanation:
                   The lewis structure of 1-Propene is shown below. All sigma bonds are highlighted by blue color and the pi bond is highlighted by red color.
                   Carbon having four unpaired electrons in its excited state can form four covalent (sigma bonds) bonds. In given structure the orbitals containing unpaired electron in sp³ hybridized C undergo head to head overlap with three hydrogen atoms having single unpaired electron and orbital of other sp² hybridized carbon in same fashion. So, four sigma bonds are formed by sp³ hybridized carbon atom.
                    The doubly bonded carbon atoms also form sigma bond but two unpaired electrons of these two carbons undergo the formation of pi bond. This pi bond forms when the orbitals overlap along the plane perpendicular to the existing sigma bond resulting in the formation of single pi bond.

8 0
3 years ago
PLEASE ANSWER
Aleks [24]

Answer:

The answer is B. Jeff pushes on his box with twice the amount of force since his box has 1/2 the mass of Jim's box.

hope it helps!

6 0
3 years ago
How many pennies are in $2,020.20?
Nata [24]

Answer:

202,020 pennies

Explanation:

The amount of pennies in 1 dollar is 100.

Basically, you just multiply the whole dollar amount (2020) by 100 and then add 20 to find the amount of pennies.

(2020)(100)+20= 202,000+20= 202,020 pennies.

5 0
3 years ago
Read 2 more answers
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