Use the nernst equation : <span><span>E<span>cell</span></span>=E−<span><span>RT</span><span>nF</span></span>ln<span><span>[F<span>e<span>3+</span><span>out</span></span>]</span><span>[F<span>e<span>3+</span><span>in</span></span>]</span></span></span>
At eq. <span>ΔG=0=−nF<span>E<span>cell</span></span>→<span>E<span>cell</span></span>=0</span>
and thus: <span>E=<span><span>RT</span><span>nF</span></span>ln<span><span>[F<span>e<span>3+</span><span>out</span></span>]</span><span>[F<span>e<span>3+</span><span>in</span></span>]</span></span></span>
To know the number of atoms, it will be necessary to use the formula of avogadro. We calculate the number of moles then we can calculate the number of avogadro.
The molar mass of:
Phosphorus = 31g / mol
Mercury = 200 g / mol
Bismuth = 209 g / mol
Strontium = 87 g / mol.
The number of avogadro (N) is 6.023 10 ^ 23
n = m (mass) / M (molar mass)
number of atoms = n. N = m / M . N
number of phosphorus atoms = 5.14/31 . 6.023 10^23 = 9.98 10 ^ 22 atoms
Number of atoms of mercury = 2.16/200 . 6.023 10^23 = 6.5 10 ^ 21 atoms
Number of bismuth atoms = 1.8/209 . 6.023 10^23 = 5.18 10 ^ 21 atoms
Number of strontium atoms = 8.8 x 10-2 /87 . 6.023 10^23 = 6.09 10 ^ 20 atoms
<span>In a titration, the substance that is unknown and being identified is called analyte. A titration is where a known solution or concentration called the titrant is used to identify and measure an unknown substance which is the analyte.</span>
A high concentration of water has <u>fewer</u> dissolved particles than a low water concentration.
Most cell membranes are not as easily permeable to many dissolved compounds as water is. There is a quick and constant flow of water. From one area with less dissolved matter to another with more, water transports NET. Or, if you want, from an area with a lot of water to one with little water. The terms isotonic, hypotonic, and hypertonic refer to the concentration of dissolved material. In a medium, such as the extracellular fluid, every distinct material has a concentration gradient that is unique from the gradients of other substances. Every substance will diffuse in line with that gradient as well.
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<span>2.8 carat C x (0.20g C/ 1 carat C) x (1 mole C/ 12.01 g C) x (6.02 x 10^23 atoms C/ 1 mole C) = 2.8 x 10^9 atoms C
Use factor label method in order to determine the amount of atoms, make sure the units cancel.</span>