Answer:
No of neutrons and protons decides mass of the atom. Electrons having negligible
mass are ignored.
Mass of atom
Mass of atom= sum of no of protons(Z) and neutons(N)
=Z+N
For eg:
In hydrogen atom,
Mass of H= Z+N
=1+0
=1 AMU
Geraldo can add a pollutant with slightly basic nature so he will have a solution of neutral pH of 7.
<h3>What is pH?</h3>
The pH of a solution is the negative logarithm to base ten of the hydrogen ions concentration of the solution.
The pH of 6.5 means that the solution is acidic.
By adding a pollutant which is slightly basic in nature, Geraldo will have a solution of neutral pH which is a pH of 7.
Learn more about pH at: brainly.com/question/24595796
Wavelength= velocity/frequency
wavelength= (3.0 x 10^8m/s) / 7.5 x 10^12 Hz)
you can do the math
I am assuming u that 108 is 10^8 and the 1012 is 10^12
Answer:
The color of the blue litmus paper turning into red tells us that the solution of the compound is acidic in nature.
The color of the red litmus paper turning into blue tells us that the solution of the compound is basic in nature.
Explanation:
Litmus paper is paper treated with a mixture of natural dyes obtained from lichens. This makes the paper purple in neutral conditions (pH = 7), red in acidic conditions (pH < 7), and blue in basic (alkaline) conditions (pH > 7). It is used to determine whether a solution is acidic or basic, but can't measure the pH.
