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AURORKA [14]
3 years ago
9

What element is stored in the shells and skeltyons of living organisims?

Chemistry
1 answer:
kykrilka [37]3 years ago
8 0

Answer:

carbon

Explanation:

Many organisms use carbon to make calcium carbonate, a building material of shells and skeletons. Other chemical processes create calcium carbonate in the water. The using up of carbon by biological and chemical processes allows more carbon dioxide to enter the water from the atmosphere.

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An atom has three full orbitals in its second energy level.
rewona [7]

Answer:

6

Explanation:

The maximum number of electrons in the orbitals of sub-levels are given as:

   for s-sublevel we have two electrons and one orbital

        p-sublevel we have six electrons and three orbitals

        d-sublevel we have ten electrons and five orbitals

       f- sublevel we have fourteen electrons and seven orbitals

The second energy level is represented by the p-sub-level and it will accommodate 6 electrons.

8 0
3 years ago
Elements in group 1 will (lose or gain) electrons to obtain a noble gas structure. How many electrons will the element gain or l
Whitepunk [10]
Answer is: elements in group 1 will lose electrons to obtain a noble gas structure. They will lose 1 electron.
For example ₃Li 1s²2s¹ will lose one electron from 2s oribtal to obtain helium structure ₂He 1s².
Or sodium ₁₁Na 1s²2s²2p⁶3s¹ will also lose one electron to obtain neon structure ₁₀Ne 1s²2s²2p⁶.
3 0
3 years ago
What is the importnace of every reaction opposite reaction
astraxan [27]

Answer:

Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. ... Forces always come in pairs - equal and opposite action-reaction force pairs.

Explanation:

8 0
3 years ago
How many grams are there in 0.12 mol of H2?
viva [34]

Answer: 2.01588

Explanation: 1 mole is equal to 1 moles H2

7 0
3 years ago
What is the molar mass of 3H20?<br> 54.06 g/mol<br> 18.02 g/mol<br> 36.04 g/mol<br> 17.01 g/mol
Aliun [14]

Answer:

mathamtichas

Explanation:

ecplandora

5 0
3 years ago
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