Answer: The smallest bond angle in the molecule x-y-x is [tex]180^0[/tex]
Explanation:
According to VSEPR theory , each atom in a molecule will achieve a geometry that minimizes the repulsion between electrons in the valence shell of that atom.
In the given compound [tex]x-y-x[/tex], the number of electron pairs is 2 that means the hybridization will be [tex]sp^2[/tex] and geometry of the molecule will be linear as there are two bond pairs .The bond angle for linear geometry is 180° which reduces the electron electron repulsions and maximise stability.
Determine the number of moles in 254 molecules of bromine.
Answer:
4.22 × 10 ⁻²² mol
Explanation:
Given data:
Number of molecules of bromine = 254 molecules
Number of moles = ?
Solution:
1 mole = 6.02 × 10 ²³ molecules
254 molecules × 1 mol / 6.02 × 10 ²³ molecules
42.2 × 10 ⁻²³ mol
4.22 × 10 ⁻²² mol
5.) A spring with a spring constant of 500 n/m is stretched 1 meter in
length. How much EPE does it have? *
500 Joules
250 Joules
1500 Joules
Answer:
250J
Explanation:
Given parameters:
Spring constant = 500N/m
Extension = 1m
Unknown:
Elastic potential energy = ?
Solution:
The elastic potential energy of a body is the energy stored within an elastic string.
EPE = [tex]\frac{1}{2}[/tex] k e²
k is the spring constant
e is the extension
Now;
EPE = [tex]\frac{1}{2}[/tex] x 500 x 1² = 250J