Answer:
14 atoms
Explanation:
Number of atoms in Fe₂(CO₃)₃
An atom is the smallest indivisible particle that takes part in a chemical reaction.
In Fe₂(CO₃)₃; we have:
Elements Number of atoms
Fe 2
C 3
O 3(3) = 9
Total number of atoms = 2 + 3 + 9 = 14 atoms
Answer:
Explanation:
Both increase in temperature and availability of water drives physical and chemical weathering and increases their rate.
Increase in temperature causes rocks to expand and molecules are more free to move about. Constantly heating and cooling of a rock can lead to mechanical fracturing or cracks developing.
A high amount of rainfall facilitates chemical weathering. Chemical weathering is the decomposition of rocks.
The main agent that is important for natural chemical processes to occur is the presence water.
Water contains some other dissolved substances in it.
This is evident in tropical regions of the world
Answer:
The correct statements are D and E.
Explanation:
The fringe width is given by the following formula as :
Here,
is wavelength of light
D is distance between slit and the screen
d is slit width.
If the between these slits is decreased, the fringe width increases. As a result, the distance between the minima increases and also the distance between the maxima increases.
Answer:
Three other length for which resonance will occur is 66 cm, 110 cm and 154 cm
Explanation:
As we know that the length of the pipe is 22 cm
Now let say it is in 1st harmonic state so we have
so we have
So we have
For N = 1
For N = 2
For N = 3