A) deposition is the processes where particles of rock or laid down in sections with heavier sediments building up first
Answer:
Rubidium (Rb).
Explanation:
From the question given above, the following data were obtained:
Electronic configuration => 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s¹
Name of element =?
To know the name of the element with the above electronic configuration, we shall determine the atomic number of the element. This can be obtained as follow:
Number of electrons = 2 + 2 + 6 + 2 + 6 + 2 + 10 + 6 + 1
Number of electrons = 37
Next, we shall determine the number of protons. This can be obtained as follow:
From the question given above, the element has no charge. Hence the element contains equal numbers of protons and electrons.
Number of electrons = 37
Number of protons = number of electrons = 37
Next, we shall determine the atomic number. This can be obtained as follow:
The atomic number of an element is simply defined as the number of protons present in the atom of the element. Thus,
Atomic number = proton number
Proton is = 37
Therefore,
Atomic number = 37
Finally, we shall determine the name of the element by comparing the atomic number of those in the periodic table.
Thus, the element with the above electronic configuration is Rubidium (Rb) since no two elements have the same atomic number
Answer:
A monosaccharide that contains 4 carbon atoms, one of which is in an aldehyde group, is classified as an aldotetrose.
Explanation:
A tetrose is a monosaccharide with 4 carbon atoms.
They have either an aldehyde functional group in position 1 (aldotetroses).
or a ketone functional group in position 2 (ketotetroses).
So, A monosaccharide that contains 4 carbon atoms, one of which is in an aldehyde group, is classified as an aldotetrose.
Answer: Skier 1 will have more potential energy because he is higher than skier 2
Explanation: Gravitational potential energy is the energy possessed by a body by virtue of its position or height.
P.E=
m= mass of the body
g= acceleration due to gravity
h= height of body
Thus if the masses of two bodies are same, the one with greater height possess greater potential energy.
Answer:
Ka = 
pH = 2.12
Explanation:
Calculation of Ka:
% Dissociation = 3% = 0.03
Concentration of solution = 0.25 M
HA dissociated as:
C(1 - 0.03) C×0.03 C×0.03
HA] after dissociation = 0.25×0.97 = 0.2425 M
![[H^+]= 0.25\times0.03 = 0.0075 M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D%200.25%5Ctimes0.03%20%3D%200.0075%20M)
![[A^{-}]= 0.25 \times 0.03 = 0.0075 M](https://tex.z-dn.net/?f=%5BA%5E%7B-%7D%5D%3D%200.25%20%5Ctimes%200.03%20%3D%200.0075%20M)
![Ka= \frac{[H^+][A^{-}]}{[HA]}](https://tex.z-dn.net/?f=Ka%3D%20%5Cfrac%7B%5BH%5E%2B%5D%5BA%5E%7B-%7D%5D%7D%7B%5BHA%5D%7D)
Calculation of pH of the solution
![pH = -log [H^+]](https://tex.z-dn.net/?f=pH%20%3D%20-log%20%5BH%5E%2B%5D)
![H^+[\tex] = 0.0075 M](https://tex.z-dn.net/?f=H%5E%2B%5B%5Ctex%5D%20%3D%200.0075%20M)
