The relation between force, mass of an object and its acceleration is given by following equation
F = mass of object X acceleration
The unit of Force is Newton (N)
unit of acceleration is ms⁻²
unit of mass if Kg
[all these are SI units]
Mass of object =
mass of sprinter =
Answer:
(A) Solubility will increase.
(B) Solubility will decrease.
(C) Solubility will decrease.
Explanation:
a) According to Le Chatelier's Principle when a change is introduced in a reaction system at equilibrium, the system responds by the reaction shifting in the direction to counter the change introduced.
When the change introduced is addition of acid, some are consumed due to it and the system would respond by reaction shifting towards creation of more
in the system by increased dissolution. Thus solubility increase.
(b) When are added, the reaction shifts to counter the change introduced of increased
by shifting to side that decreases the increased
. That happens by reaction shifting towards some
precipitating back. Hence solubility decreases.
(c) The change introduced is addition of which will be countered by reaction shifting to side that decreases increased
, which happens by some
precipitating back. Hence solubility decreases.
Answer:
1s² 2s²2p³
Explanation:
If the atom has seven electrons, it is Element 7 (nitrogen).
In the Periodic Table, you count the electrons in all the subshells up to
No. 7.
In the first Period, you have filled the 1s level (2 electrons).
In the second Period, you have filled the 2s subshell (2 electrons) and put three electrons in the 2p subshell.
Thus, the electron configuration is
1s² 2s²2p³
Note how the superscripts tell you the number of electrons in each subshell: <em>2 + 2 + 3 = 7</em>.
