Which formula represents an asymmetrical molecule ch4 co2 n2 nh3
1 answer:
Answer:
NH₃
Step-by-step explanation:
All the molecules have some degree of symmetry, but only NH₃ is asymmetric with respect to the bond dipoles.
NH₃ has a trigonal pyramidal geometry.
All the N-H bond dipoles point toward the N, so they all have an upward component with no counterbalancing downward component.
The bond dipoles do not cancel, so NH₃ has a molecular dipole.
CH₄ is tetrahedral and symmetrical.
CO₂ and N₂ are linear and <em>symmetrical</em>.
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Answer:
3.65 x 10¹⁰ electrons
Explanation:
we'll apply the following equation for electric field of a point charge on a spherical conductor
where E is the electric field
k is a constant of the value 8.99 x 10⁹ Nm²/C²
r is the radius of the spherical conductor
q is the total charge in the sphere
Given diameter d =41.0cm, radius r = 20.5cm = 0.205m (convert cm to m)
Electrical field E = 1250 N/C
we are asked to determine how many excess electrons must be added to the surface of the sphere to produce this electric field
q = <u>E x r²</u>
k
q = <u>1250 N/C x 0.205m</u>²
8.99 x 10⁹ Nm²/C²
q = 5.84 x 10⁻⁹ C
this is the total charge in the sphere
To determine the number of electrons, we can divide the charge q by the charge on an electron e (1.6 x 10⁻¹⁹C)
n = <u>5.84 x 10⁻⁹ C </u>
1.6 x 10⁻¹⁹C
n = 3.65 x 10¹⁰ electrons
Therefore, to apply an electric field of magnitude 1250 N/C, the isolated spherical conductor must contain 3.65 x 10¹⁰ electrons