Respuesta :
Answer:
The answer is "[tex]\bold{6.26 \times 10^{24} \ molecules \ NH_3}\\\\[/tex]"
Explanation:
1-mole molecules as per Avogadro number[tex]= 6.02 \times 10^{23} \ molecules\\\\[/tex]
1-mole [tex]NH_3 \to 6.02 \times 10^{23} \ molecules\\\\[/tex]
[tex]10.4 \ moles \ of \ \ NH_3 :[/tex]
[tex]\to \frac{ 6.02 \times 10^{23} \ molecules }{ 1 \ mole\ NH_3} \times 10.4 \ mole \ NH_3\\\\ \to 6.02 \times 10^{23} \ molecules \times 10.4\\\\\to 62.608 \times 10^{23} \ molecules \\\\\to 6.26 \times 10^{24} \ molecules \ NH_3\\\\[/tex]
A mole corresponds to the mass of a substance that contains [tex]6.023 * 10^2^3[/tex]particles of the substance.
The concept of moles are used in various ways:-
- Chemical equation.
- Law of constant proportion.
According to the question, the formula required is:-
[tex]n = \frac{number\ of\ molecules}{Na}[/tex]
The Na is defined as the Avogadro constant is the proportionality factor that relates the number of constituent particles in a sample with the amount of substance in that sample.
Therefore, the number of moles in ammonia is:-
[tex]10.4 = \frac{number\ of\ molecules}{6.022*10^23}[/tex]
After solving the question, the number of molecules is:-
[tex]6.26 x*10^2^4\ molecules NH3[/tex].
For more information, refer to the link:-
https://brainly.com/question/20486415
