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Elis [28]
3 years ago
14

In a Hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. How many unique charge-p

airs are there (without double counting)?
Physics
1 answer:
lutik1710 [3]3 years ago
5 0

Answer:

The total number of charge pair without double counting is 6.

Explanation:

Given that,

Number of proton = 2

Number of electron = 2

We need to calculate the total number of charges in Hydrogen atom

Using formula for number of charges

n= p+n

n =2+2

n=4

Number of charge in pair is

r = 2

We need to calculate the total number of possible combination of pairs without double counting

Using formula of combination

N=_{n}C^{r}

Where, n = number of charges

r = number of charges per pair

Put the value into the formula

N=_{4}C^{2}

N=\dfrac{4\times3\times 2}{2(4-2)}

N=\dfrac{4\times3\times 2}{2\times2}

N=6

Hence, The total number of charge pair without double counting is 6.

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It's constant everywhere in its trajectory.

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An electric motor rotating a workshop grinding wheel at a rate of 151 rev/min is switched off. Assume constant angular decelerat
tamaranim1 [39]

Answer:

Explanation:

Initial angular velocity ω₀ = 151 x 2π / 60

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This formula equation is unbalanced.
Grace [21]
The answer is:  [C]:  "4" .
___________________________________________________
Note:  To balance this equation, the coefficient, "4", should be placed in front of the PCl₃ ;  and the coefficient, "6", should be placed in front of the Cl₂ .
________________________________________________________
The balanced equation is:
__________________________________________________
             P₄ (s) + 6 Cl₂ (g)  <span>→ 4 </span>PCl₃ (l)   .
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