Answer: 8 dots would be needed to represent the outer electrons for an atom of neon in an electron dot diagram.
Explanation:
Electron-dot diagram is also known as Lewis-dot structure. It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule. The valence electrons are represented by 'dot'.
As atomic number of neon is 10 and we know that neon has 10 electrons with electronic configuration of 2,8 and thus has '8' valence electrons.
Therefore, the total number of valence electrons is 8 and 8 dots would be needed to represent the outer electrons for an atom of neon in an electron dot diagram.
Answer:
A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. ... In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
Explanation:
Answer:
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Explanation:
https://courses.lumenlearning.com/boundless-chemistry/chapter/physical-and-chemical-properties-of-matter/
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Answer:
5.72 grams of O₂ are present in the sample
Explanation:
Let's calculate the moles of O₂ by the Ideal Gases Law.
P . V = n . R . T
1.66 atm . 2.50L = n . 0.082 . 283K
(1.66 atm . 2.50L) / 0.082 . 283K = n
0.179 mol = n
Molar mass O₂ = 32 g/m
Mol . molar mass = mass → 0.179 m . 32g/m = 5.72 g
