Answer:
Explanation:
Ions:
When an atom lose or gain electron ions are formed.
There are two types of ions anion and cation.
Anion:
When an atom gain electron negative charge is created and anion is formed.
X + e⁻ → X⁻
Cation:
When an atom lose electron positive charge is created and cation is formed.
X → X⁺ + e⁻
Electron:
The electron is subatomic particle that revolve around outside the nucleus and has negligible mass. It has a negative charge.
Symbol= e-
Mass= 9.10938356×10-31 Kg
It was discovered by j. j. Thomson in 1897 during the study of cathode ray properties.
He constructed the glass tube and create vacuum in it. He applied electric current between electrodes. He noticed that a ray of particles coming from cathode to wards positively charged anode. This ray was cathode ray.
Properties of cathode ray:
The ray is travel in straight line.
The cathode ray is independent of composition of cathode.
When electric field is applied cathode ray is deflected towards the positively charged plate.
Hence it was consist of negatively charged particles.
Neutron and proton:
While neutron and proton are present inside the nucleus. Proton has positive charge while neutron is electrically neutral. Proton is discovered by Rutherford while neutron is discovered by James Chadwick in 1932.
Symbol of proton= P+
Symbol of neutron= n0
Mass of proton=1.672623×10-27 Kg
Mass of neutron=1.674929×10-27 Kg
<u>Answer:</u> The hydronium ion concentration in the solution is 
<u>Explanation:</u>
To calculate the molarity, we use the equation:
Moles hydrochloric acid solution = 0.060 mol
Volume of solution = 1 L
Putting values in above equation, we get:
The chemical reaction for aniline and HCl follows the equation:
<u>Initial:</u> 0.24 0.060 0.31
<u>Final:</u> 0.18 - 0.37
To calculate the pH of acidic buffer, we use the equation given by Henderson Hasselbalch:
![pH=pK_a+\log(\frac{[\text{conjugate acid}]}{[\text{base}]})](https://tex.z-dn.net/?f=pH%3DpK_a%2B%5Clog%28%5Cfrac%7B%5B%5Ctext%7Bconjugate%20acid%7D%5D%7D%7B%5B%5Ctext%7Bbase%7D%5D%7D%29)
![pH=pK_a+\log(\frac{[C_6H_5COO^-]}{[C_6H_5COOH]})](https://tex.z-dn.net/?f=pH%3DpK_a%2B%5Clog%28%5Cfrac%7B%5BC_6H_5COO%5E-%5D%7D%7B%5BC_6H_5COOH%5D%7D%29)
We are given:
= negative logarithm of acid dissociation constant of benzoic acid = 4.2
![[C_6H_5COO^-]=0.18M](https://tex.z-dn.net/?f=%5BC_6H_5COO%5E-%5D%3D0.18M)
![[C_6H_5COOH]=0.37M](https://tex.z-dn.net/?f=%5BC_6H_5COOH%5D%3D0.37M)
pH = ?
Putting values in equation 1, we get:
To calculate the hydronium ion concentration in the solution, we use the equation:
![pH=-\log[H_3O^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%5BH_3O%5E%2B%5D)
pH = 3.89
Putting values in above equation, we get:
![3.89=-\log[H_3O^+]](https://tex.z-dn.net/?f=3.89%3D-%5Clog%5BH_3O%5E%2B%5D)
![[H_3O^+]=10^{-3.89}=1.29\times 10^{-4}M](https://tex.z-dn.net/?f=%5BH_3O%5E%2B%5D%3D10%5E%7B-3.89%7D%3D1.29%5Ctimes%2010%5E%7B-4%7DM)
Hence, the hydronium ion concentration in the solution is
c. sandstone in the zone of saturation
Explanation:
The best aquifer of all is a sandstone in the zone of saturation. An aquifer is a porous and permeable formation where groundwater can accumulate.
- To be a good aquifer, a rock or soil must be porous and permeable.
- Porosity is the amount of void spaces present in a rock.
- Permeability is the inter-connectivity of the pore spaces.
The zone of saturation is the zone below the water table where water is always present underground.
- Sandstones have high porosity and permeability.
- They are good aquifers when found at the zone of saturation.
Learn more:
Sedimentary rocks brainly.com/question/9131992
#learnwithBrainly
Answer:
Sure!
Explanation:
I could use someone to talk to so I don't see why not.
