Answer:
Noble Gases
Explanation:
Noble gases are very unreactive because they already have a full valence shell and therefore, do not need to bond.
D. Experiments provided new evidence about the atom, I think, sorry if I’m wrong
Answer:
<h2>1 ) substances that produce hydrogen atoms in solution.</h2>
Explanation:
A swedist scientist Savante Arhenius give the theory of behaviour of Acid-bases. According to Arhenius ,Arhenius Acid compound produce hydrogen ion or proton upon adding in aqueous solution . Acid are molecular compound that have higly polar covalently bonded ionizable hydrogen atom. HCL is a polar covalently bonded and gas at room temperature and noormal pressure . Upon addition of HCL in water cause ionization ,water breaks into chloride ion and hydrogen ion , in this reaction chlorine gain bond pair electron , while hydrogen ion or proton attached with water . chlorine gain bond pair electron due higher electronegativity than hydrogen and hydrogen loose their electron due to less electronegativity and become hydrogen ion ,these hydrogen ion attached with water to form hydronium ion
. Hydronium ion is polyatomic ion .
- Ionization of HCL in water
![HCL(gas)\rightarrow H^{+}(aq) + CL^{-}(aq)](https://tex.z-dn.net/?f=HCL%28gas%29%5Crightarrow%20H%5E%7B%2B%7D%28aq%29%20%2B%20CL%5E%7B-%7D%28aq%29)
- formation of polyatomic hydronium ion after HCL ionization in water ,where hydrogen ion attached to water and form polyatomic ion.
.
In a solution, when the concentrations of a weak acid and its conjugate base are equal: 1. the -log of the concentration of H+ and the -log of the Ka are equal.
<h3>What are Strong acid strong bases ?</h3>
Any acid that entirely ionises in solutions is considered a strong acid. When positioned, it emits the most hydrogen ions or protons.
- It is a substance with the capacity to take a proton out of an extremely weak acid. In water, they can also entirely separate into its ions. Examples include sodium hydroxide and potassium hydroxide (KOH) (NaOH)
<h3>What are weak acid and weak bases ?</h3>
Acids that don't entirely dissociate in solution are referred to as weak acids. In other words, any acid that is not a strong acid qualifies as a weak acid. The amount of dissociation determines how strong an acid is; the more dissociation, the stronger the acid.
- Weak bases are basic compounds that, when dissolved in solutions, do not entirely separate into their constituent ions.
Learn more about Acids and bases here:
brainly.com/question/27915098
#SPJ4
Answer: The final temperature when heat in the amount of 800 kJ is added to 10 moles of ethylene initially at
is
.
Explanation:
It is known that the heat capacity of ethylene is 2.145 J/g K. Hence, for 10 moles of ethylene its mass will be as follows.
No. of moles =
10 mol =
mass = 280.5 g
Now, we know that relation between heat energy, mass and specific heat is as follows.
q = ![mC \times \Delta T](https://tex.z-dn.net/?f=mC%20%5Ctimes%20%5CDelta%20T)
![800 \times 10^{3} J = 280.5 \times 2.145 J/g K \times (T - 473) K](https://tex.z-dn.net/?f=800%20%5Ctimes%2010%5E%7B3%7D%20J%20%3D%20280.5%20%5Ctimes%202.145%20J%2Fg%20K%20%5Ctimes%20%28T%20-%20473%29%20K)
![800 \times 10^{3} J = 601.67 \times (T - 473) K](https://tex.z-dn.net/?f=800%20%5Ctimes%2010%5E%7B3%7D%20J%20%3D%20601.67%20%5Ctimes%20%28T%20-%20473%29%20K)
1329.63 = T - 473
T = 1802.63 K
or, = ![(1802.63 - 273)^{o}C](https://tex.z-dn.net/?f=%281802.63%20-%20273%29%5E%7Bo%7DC)
= ![1529.63^{o}C](https://tex.z-dn.net/?f=1529.63%5E%7Bo%7DC)
Thus, we can conclude that the final temperature when heat in the amount of 800 kJ is added to 10 moles of ethylene initially at
is
.