Answer:
NaCl dissolves into the water and dissociates into Na⁺ and Cl⁻ ions, present homogeneously throughout the solvent
SiO₂ settles down at the bottom of the vessel in the form of coarse particles
Explanation:
NaCl is a strong electrolyte that is, it dissociates readily in an aqueous solution. So when the water is added in the mixture, NaCl dissolves readily and is present uniformly in the solvent as Na⁺ and Cl⁻ ions.
SiO₂ has a strong ionic bond and is not dissociated by water, so it is present in the form of coarse particles at the bottom of the vessel.
Yes a red blood cell placed in a sline solution shrinks because of the process of osmosis.
Answer:
Hi! hopefully this helps you
Explanation:
You can make a buffer solution for a specific pH (potential of hydrogen) by mixing together a weak acid like acetic acid HC2H3O2 with a salt that contains the conjugate base like sodium acetate NaC2H3O2. A neutralization reaction would occur as you are mixing a weak acid and a strong base.
When you add the base to an acidic solution, the solution becomes less acidic and moves toward the middle of the pH scale. Aka neutralization
Hope this helps! best of luck <3
Answer:
False
Explanation:
Magnesium is the element of second group and third period. The electronic configuration of magnesium is - 2, 8, 2 or
There are 2 valence electrons of magnesium.
Only the valence electrons are shown by dots in the Lewis structure.
As, stated above, there are only two valence electrons of magnesium, so in the Lewis structure, two dots are made around the magnesium symbol.
Given that the electronic configuration is:-
.
Orbital s cannot accommodate 3 electrons and also in magnesium it has
. Hence, the statement is false.
Level 3 is the correct answer