Each shell contains a fixed number of electrons. The general formula of the number of electrons can be hold in n-th shell is 2n². 5th shell can hold 2x5² = 50 number of electrons.
1st shell contains 2 X 1²= 2 number of electrons, 2nd shell contains 2 X 2²=8 number of electrons, 3rd shell contains 2 X 3²=18 number of electrons, 4th shell contains 2 X 4²=32 number of electrons, 5th shell contains 2 X 5²=50 number of electrons and so on.
The answer is: Volume of mercury = 9.63 
.
Density (d) is defined as mass of substance divided by its volume. Thus, if mass and density are known, then Volume can be determined.
What is the formula of volume in terms of density?
- Let mass of substance be 'm' and volume be 'V'. Thus, as per the definition of density, it is expressed as-
- Thus, volume can be expressed as-
- Now, mass of empty vial= 55.32 g and the mass of (vial+ mercury) = 185.56 g.
Thus, mass of mercury =
- Thus, mass of mercury = 130.24 g and density of mercury =
. Its volume is calculated as-
- Hence, volume of mercury = 9.63 .
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Body surface area is calculated a) in m2 from weight and height. b) from height. c) from weight. d) in meters from weight and height.
Facts:
It is also concerned with the transport of proteins and lipids within the cell.
Rough ER has ribosomes attached to its surface; proteins synthesized on the ribosomes are enclosed in vesicles and transported to the Golgi Apparatus.
Answer:
The answer is in the problem
Explanation:
As general rule of number of oxygen is -2:
O → -2
Alkali metals (Li, Na, K) are always +1
Na → +1
Alkali earth methals (Be, Mg, Ca...) are always +2
Ca → +2
The halogen group (F, Cl, Br...) is always -1
F → -1
The oxidation number of Si (+/- 4)
Aluminium is, usually +3
And to complete the octet rule in nitrogen, 3 electrons are required. That means:
N → -3
