To convert grams to moles, you need molar mass.
according to the periodic table, the molar mass of 47.88 g/mol. answer is C
Answer:
4198.97404999
Explanation:
In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together.
Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance.
If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100.
Answer:
pKa = 9
Explanation:
In this case, we have to remember the meaning of "p". When we use "p" in any calculation we have to apply the minus ten based logarithm, so:
For example, when we use the "pH" value. We have to apply the minus ten based logarithm of the concentration of the hydronium ion:
![pH~=~-Log[H^+]](https://tex.z-dn.net/?f=pH~%3D~-Log%5BH%5E%2B%5D)
So, if we have wanted to calculate the pKa value. We have to apply the minus ten based logarithm of the Ka value, so:
Now we can plug the value into the equation:
<u>The pKa value is 9.</u>
I hope it helps!
Radioactive isotope, also called radioisotope, radionuclide, or radioactive nuclide, any of several species of the same chemical element with different masses whose nuclei are unstable and dissipate excess energy by spontaneously emitting radiation in the form of alpha, beta, and gamma rays.
