When a solute is completely dissolved in a solvent, a solution is formed.
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Answer:
3.5 mol KClO3
Explanation:
Given 3.50 moles of KCl as the target amount in the problem, used the coefficient of the balanced chemical reaction involved to determine the number of moles of potassium perchlorate needed.
x mole of KClO3 = 3.5 mol KCl x [(2 mol KCl)/ (2 mol KClO3)] = 3.5 mol KClO3
x mole of KClO3 = 3.5 mol KClO3
Answer 1: Atoms gain valence electrons to form anions.
Explanation:
Anions are negatively charged species of an ions. Anions are formed when atoms with nearly complete octet gains electrons.
Answer 2: Emission spectrum
Explanation:
When ever electron jumps from higher energy to lower energy level energy is emitted out in the form of light.The wavelength of the light is given as 
:
, E = energy, c= speed the light, h= planck constant
Answer 3: Two atoms of silicons could combine by fusion in order to create nickel.
Explanation:
Silicon has atomic number of 14 with atomic mass of 28 u.
nickel has atomic number of 28 with atomic mass of 59 u.
Two different isotopes of silicon atom will fuse together to give nickel.
The reaction equation is first order with respect to [H+]
when PH1 = -㏒[H+]1 so, when PH = 6
So by substitution:
∴ 6 = -㏒[H+]1
∴[H+]1 = 1 x 10^-6
and when PH2 = -㏒[H+]2 so, when PH2 = 2
so by substitution:
∴ 2 = -㏒[H]2
∴[H]2 = 1 x 10^-2
So the rate of reaction changes by the factor of:
[H2]2/[H]1 = (1 x 10^-2) / (1 x 10^-6) = 10000
It is 10000 times faster when PH decreases from 6 to 2
