Given-
one mole of , one mole of and one mole of .
a) As each mole consists of same number of atoms or molecules i.e.
(6.022 ×) , therefore one mole of , one mole of and one mole of have same number of molecules.
b) Mass of 1 mole of substance is known as its molar mass.
Thus , mass of 1 mole of = 2× (1.0 g/mol) = 2.0 g/mol
Mass of 1 mole of = 2× (16.0 g/mol) = 32.0 g/mol
Mass of 1 mole of = 2× (19.0 g/mol) = 38.0 g/mol
Therefore, 1 mole of ha sthe highest mass among the given options.
Answer:
4.76
Explanation:
In this case, we have to start with the <u>buffer system</u>:
We have an acid () and a base (). Therefore we can write the <u>henderson-hasselbach reaction</u>:
If we want to calculate the pH, we have to <u>calculate the pKa</u>:
According to the problem, we have the <u>same concentration</u> for the acid and the base 0.1M. Therefore:
If we divide:
If we do the Log of 1:
So:
With this in mind, the pH is 4.76.
I hope it helps!
hormone erythropoietin (EPO) is responsible for the production of red blood cells.