The liquid will stop converting into vapor. This process is to balanced the amount of substance of both phases inside the flask.
The gram formula mass of P2O5 is 31*2 + 16*5 =142. The mole number of P2O5 is 0.380/142=0.00268 mol. There is 7 atom in one P2O5 molecule. And there is 6.02 * 10^23 molecule per mol. So the answer is 1.13*10^22 atoms.
Answer:
It is the most recent idea of the atom and it is proved to be true
Explanation:
PKa is defined as the logarithm of the inverse of Ka, i.e
pKa = log ( 1 / Ka)
Ka is the dissociation constant of the acid. The larger Ka the stronger the acid.
On the other hand, from pKa = log (1 / Ka) the larger Ka the smaller 1 /Ka, and so the smaller log (1/Ka).
So, the relation between Ka and pKa is inverse, which means that an acid with greater value of pKa will have lower value Ka, and so it will be weaker or the smaller the pKa the stronger the acid.
Therefore, in our case HA has the lower pKa ant it will be the stronger acid.
Answer: HA is the stronger acid, because it has the lower pKa and pKa is inversely related to the strength of the acid.
