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Pachacha [2.7K]
2 years ago
15

If an ion has a -2 charge, how many extra electrons do you add to the lewis structure

Chemistry
1 answer:
IceJOKER [234]2 years ago
8 0

Answer:

add 2 extra electrons

Explanation:

This is because -2 means 2 electrons are gained while +2 means it lost two electrons.

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If I have 12 protons, how many neutrons and electrons would I need to make a stable atom?
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3 years ago
Hydrogen gas was collected by water displacement. what was pressure of the h2 collected if the temperature was 26°c?
Vedmedyk [2.9K]
The ideal gas law may be written as
p= \frac{\rho R T}{M}
where
p = pressure
ρ =density
T = temperature
M = molar mass
R = 8.314 J/(mol-K)

For the given problem,
ρ = 0.09 g/L = 0.09 kg/m³
T = 26°C = 26+273 K = 299 K
M = 1.008 g/mol = 1.008 x 10⁻³ kg/mol

Therefore
p= \frac{(0.09 \, kg/m^{3})*(8.314 \, J/(mol-K))*(299 \, K)}{1.008 \times 10^{-3} \, kg/mol} =2.2195 \times 10^{5} \, Pa

Note that 1 atm = 101325 Pa
Therefore
p = 2.2195 x 10⁵ Pa
   = 221.95 kPa 
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   = 2.19 atm

Answer:
2.2195 x 10⁵ Pa (or 221.95 kPa or 2.19 atm)

4 0
3 years ago
What coefficient should be placed before 02?<br> 2S+ __02 → 2S03
Trava [24]

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