Answer:
Explanation:
It is given that, the frequency of Ultraviolet radiation is 
We need to find the energy of the photon. The formula for the energy of a photon is given by :
So, the energy of the photon is 
.
Answer is: b. more than 7.
The endpoint is the point at which the indicator changes colour in a colourimetric titration and that is point when titration must stop.
For example, basic salt sodium acetate CH₃COONa is formed from the reaction between weak acid (in this example acetic acid CH₃COOH) and strong base (in this example sodium acetate NaOH).
Balanced chemical reaction of acetic acid and sodium hydroxide:
CH₃COOH(aq) + NaOH(aq) → CH₃COONa(aq) + H₂O(l).
Neutralization is is reaction in which an acid (in this example vinegar or acetic acid CH₃COOH) and a base react quantitatively with each other.
Explanation:
Fe2o3+ 3co ---------. 2fe + 3co2
A it increases is the correct answer.
Good luck and I hope this helps.!
