Answer:
As a gas is compressed in a cylinder its pressure
As the compression proceeds the volume of the chamber is decreasing and since mass is same, density increases. Similarly as volume decreases the number of gas molecules colliding with the walls increases as the density increases, so the pressure on the wall also increases.
Answer: The concentration of hydrogen ion is 2.5 x 10∧-3.
Explanation:
It is well known that; pH + pOH = 14
∴ pH + 11.40 = 14
pH = 14 -11.40 = 2.60
Remember that,
pH = - Log [ H+ ]
2.60 = - log [H+]
To get the hydrogen ion concentration, we take the anti-log of 2.60.
[H+] = Antilog 2.60 = 2.5 x 10∧-3.
Answer:
Z³⁺
Explanation:
The ion symbol can be depicted as Z³⁺ .
In this atom, the number of protons is 27 and the number of electrons is 24.
Protons are the positively charged particles within an atom.
Electrons are the negatively charged particles within an atom.
To find the charge;
Charge = Number of protons - number of electrons
Charge = 27 - 24 = +3
The atom is positively charged and it can be depicted as Z³⁺
I see you have access to the internet. Google 'Kelvin to C', and input 251. You'll get -22.15.
