Answer:
53.4 % is the percent yield
Explanation:
This is the reaction:
C₆H₆ + Cl₂ → C₆H₅Cl + HCl
First of all we need to know the moles of benzene we used
39 g . 1 mol / 78 g = 0.5 moles
Ratio is 1:1 so 1 mol of benzene produces 1 mol of chloride
0.5 moles of chloride were produced by 0.5 moles of benzene
We must calculate the mass of chloride we produced
0.5 mol . 112.45 g / 1 mol = 56.2g
Let's calculate the percent yield
(Yield produced / Theoretical yield ) . 100
(30 g / 56.2 g) . 100 = 53.4 %
Answer:
g = 1.11x10⁻⁵Ω.
Explanation:
The membrane conductance (g) can be calculated by dividing membrane current (I) through the driving force (Vm - E) as follows:
<em>where Vm: is the membrane potential and </em><em>: is the equilibrium potential for the ion or reversal potential. </em>
The equilibrium potential for the ion can be calculated using the Nernst equation:
<em>where R: is the gas constant = 8.314 J/K*mol, F: is the Faraday constant = 96500 C/mol, T: is the temperature (K), z: is the ion's charge, [ion]out and [ion]ins: is the concentration of the ion outside and inside, respectively. </em>
Now, we can calculate the membrane conductance (g) using equation (1):
Therefore, the membrane conductance is 1.11x10⁻⁵Ω.
I hope it helps you!
Answer:
If a metal is less reactive than carbon, it can be extracted from its oxide by heating with carbon. The carbon displaces the metal from the compound, and removes the oxygen from the oxide. This leaves the metal.
Answer:
a lithium atom (Z=3, A=7 AMU) contains three protons (found from Z), three electrons (as the number of protons is equal to the number of electrons in an atom), and four neutrons (7 – 3 = 4).
Explanation:
Answer: Option (d) is the correct answer.
Explanation:
A force that exists between two or more objects which are not in contact is known as gravitational force. It is a downward force.
For example, falling of an apple on the ground is due to the gravitational force.
Thus, we can conclude that the universal force that exists between any objects with mass is called gravity.