Answer:
Explanation:
Atomicity of an element is a measure of the total number of atoms present in a molecule. For example- O2 , O Similarly, an ozone molecule consists of 3 atoms of oxygen and has an atomicity of 3. The atomicity of ammonia is NH3.Ammonia is a compound of nitrogen and hydrogen with the formula NH3.
(Could very much be incorrect, it's just what I think it is.)
Answer:
pH = 7.0
Explanation:
When HCl reacts with NaOH, H₂O and NaCl are produced, thus:
HCl + NaOH → H₂O + NaCl
At equivalence point, all HCl reacts with NaOH. The only you will have is water.
Equilbrium of water is:
H₂O(l) ⇄ H⁺(aq) + OH⁻(aq)
K = 1x10⁻¹⁴ = [H⁺] [OH⁻]
As H⁺ = OH⁻ <em>because both are produced from the same water-</em>
1x10⁻¹⁴ = [H⁺]²
1x10⁻⁷M = [H⁺]
As pH = -log= [H⁺]
<h3>pH = 7.0</h3>
<em>-The pH at equivalence point in the titration of a strong acid with a strong base is always 7.0-</em>
They believe that a cloud of gas (nebula) starts being pulled together by gravity to the point where it is so small, it starts nuclear fusion. This then start the stars life.
Answer:
A
Explanation:
because i looked it up and read a paragraph explaining how gravity pulled gas and dust together to create the solar system