Answer:
Explanation:
H₃O⁺ and H₂O .
H₂O + H⁺ ⇄ H₃O⁺
H₂O accepts proton to form H₃O⁺ so H₂O is base .
H₃O⁺ ⇄ H₂O + H⁺
Here H₃O⁺ is acid because it gives proton ( H⁺ ) .
HCO₃ ⁻ and H₂CO₃
H₂CO₃ ⇄ HCO₃ ⁻ + H⁺
H₂CO₃ is acid because it gives proton ( H⁺ )
HCO₃ ⁻ + H⁺ = H₂CO₃
HCO₃ ⁻ is base because it accepts proton .
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
A Lewis structure is a two-dimensional representation of a molecule that does not necessarily show what shape that molecule would take in three dimensions. Based on the Lewis structure and your knowledge of VSEPR theory, approximate the smallest bond angle in this molecule.
..
x--------y--------x
..
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.
how is geologic activity & geologic structure similar?
Explanation:
Geological activity determines geological structures. The prevalent types and forms of tectonic working in a place will control the form of structure that can be found in a terrain.
In volcanic region, it is common to see volcanic structures of different types such as calderas, strato-volcano etc. These structures are formed by the volcanic activities. Also, in a karst topography, we find sink holes, stalactites and stalagmites etc. due to the nature of the geologic activities going on. Some sedimentary rocks shows cross bedding due to the environment where they form.So, geologic activities controls the structure found in an area