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Rzqust [24]
3 years ago
12

Which element consists of positive ions immersed in a “sea” of mobile electrons?

Chemistry
1 answer:
denis-greek [22]3 years ago
8 0

Answer:

Calcium

Explanation:

Calcium is the only metal here

hope this helps...

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A molecular orbital is a region of space in a covalent species where electrons are likely to be found. The combination of two at
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Answer:

bonding molecular orbital is lower in energy

antibonding molecular orbital is higher in energy

Explanation:

Electrons in bonding molecular orbitals help to hold the positively charged nuclei together, and they are always lower in energy than the original atomic orbitals.

Electrons in antibonding molecular orbitals are primarily located outside the internuclear region, leading to increased repulsions between the positively charged nuclei. They are always higher in energy than the parent atomic orbitals.

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Special shapes in crystals show a pattern called a what
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Which of the following is the term for the heaviness on something's surface that exerts a force over an area? a. force b. pressu
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Which animal resembles their parents already after being born or hatched?
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2 years ago
How many molecules are present in a drop of ethanol, c2h5oh, of mass 2.3*10^-2.3g? (NA=6.0*10^23mol^-1)
sdas [7]

Answer:

3.0 × 10²⁰ molecules

Explanation:

Given data:

Mass of ethanol = 2.3 × 10⁻²°³ g

Number of molecules = ?

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Number of moles = mass/ molar mass

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Number of moles = 0.05 × 10⁻²°³ mol

Number of molecules:

One mole = 6.022 × 10²³ molecules

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0.30 × 10²⁰°⁷ molecules

3.0 × 10¹⁹°⁷ molecules which is almost equal to 3.0 × 10²⁰ molecules.

5 0
3 years ago
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