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Lunna [17]
2 years ago
8

A polyatomic ion contains 18 protons and 20 electrons. the net charge if this ion is ___?

Chemistry
2 answers:
andrew11 [14]2 years ago
6 0
-2 cuz 20 negative minus 18 positive is -2
sesenic [268]2 years ago
5 0

Answer:

Net Charge = -2

Explanation:

If we subtract 18 from 20 we get 2. Since protons are positive and electrons are negative, and then it's obvious that electrons are greater in number, therefore the net charge would also be negative which is -2.

hope that helps...

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We can use this equation for boiling point elevation:
ΔT(b) = i K(b) M
when Δ T(b) is the increase of boiling point of the solution.
and i is ( vant Hoff factor, the number of particles or ions per mole-clue.
and K(b) is boiling point increase constant for the solution ( and for water it is equal 0.52 C° Kg/mol)
We can assume i (vant Hoff factor ) = 1 as the sucrose is nonelectrolyte (not readily ionize).
So for water: Tb° = 100 c° and Kb = 0.52 c° Kg / mol
By substitute at:
ΔTb = i Kb M
∴  = 1 * 0.52 * 3.60 = 1.8432 C°
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8 0
3 years ago
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Explanation:

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