Complete Question
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Answer:
The answer is shown on the second, third and fourth uploaded image
Explanation:
The explanation is shown on the second, third and fourth uploaded image
The abbreviation that represents a volume unit is cm3 (as long as that is supposed to be cm^3)
Answer:
Electron shell.Each shell can contain only a fixed number of electrons, the first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.
(Hope it helped you!)
Explanation:
Answer:
The explanation to your question is below.
Explanation:
In thermochemistry, reactions are classify in two groups.
- Endothermic reactions: are reactions that need energy (heat) from the surroundings to happen. If they are not heated, the products will not form.
Example:
2 H₂O + energy ⇒ 2H₂ + O₂
-Exothermic reactions: are reactions that release energy to the surroundings. They happen spontaneously.
Example:
CH₄ + 2O₂ ⇒ CO₂ + 2H₂O + energy (heat)
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Question: How many sides does a dodecahedron have?
Answer: The dodecahedron has 12 sides.
