1+1is= Make that as a ?
1 answer:
<u>Answer:</u> The correct answer to this problem is 2.
<u>Explanation:</u>
We are given a mathematical problem, which is:
1 + 1 = ?
To solve this, we use the mathematical operator known as addition. In this, we add two numbers and the resulting value is the answer to the problem.
By adding 1 and 1, we get:
Thus, the correct answer to this problem is 2.
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25.9 kJ/mol. (3 sig. fig. as in the heat capacity.)
<h3>Explanation</h3>The process:
.
How many moles of this process?
Relative atomic mass from a modern periodic table:
- K: 39.098;
- N: 14.007;
- O: 15.999.
Molar mass of :
.
Number of moles of the process = Number of moles of dissolved:
.
What's the enthalpy change of this process?
for
. By convention, the enthalpy change
measures the energy change for each mole of a process.
.
The heat capacity is the least accurate number in these calculation. It comes with three significant figures. As a result, round the final result to three significant figures. However, make sure you keep at least one additional figure to minimize the risk of rounding errors during the calculation.
Answer:
A) 8.08*10^-10 cm^-1
B) 1.27 * 10^-5
Explanation:
A) PERMEABILITY OF THE MEMBRANE to the material = K * D/(dx) ---- (1)
K = J / (Cl - Cr )
= 0.234 * 10^-12 / (2.3*10^-6 M - 0 )
= 10 *10^-6 M
dx = 10*10^-6 m * 100 cm
= 10 *10^-4 cm
D = 0.8 * 10^-5 cm^2s^-1
input the calculated values into equation 1
permeability of the membrane = 8.08*10^-10 cm^-1
B) equivalent relative area available for the diffusion of the material
at thickness of membrane = 10*10^-6 m
can be calculated using this relation = ---------- (2)
flux = 0.234 * 10^-12 mol.cm^-2.s^-1
thickness = 10*10^-4 cm
diffusion coefficient = 0.8 * 10^-5 cm^2.s
Cl = 2.3*10^-6 m
input the above values into equation 2
equivalent relative area available for the diffusion of the material
= 1.27 * 10^-5