Hey there!:
Number of moles = ( number of atoms / 6.023*10²³ atoms )
given number of atoms = 5.03*10²⁴
Therefore:
Number of moles B = 5.03*10²⁴ / 6.023*10²³
Number of moles B = 8.35 moles
Hope that helps!
Answer:
20 moles
Explanation:
4 Fe + 3O₂ → Fe₂O₃
The chemical equation provided is not yet balanced so let's start by balancing it.
4 Fe + 3O₂ → 2 Fe₂O₃
The equation is now balanced with 4 Fe atoms and 6 O atoms on both sides of the equation. It is important to ensure that the chemical equation is balanced, as only then will it tell you the relationship of the reactants and products in terms of mole.
Looking at the coefficients of Fe and Fe₂O₃, 4 moles of Fe is needed to make 2 moles of Fe₂O₃.
This can be simplified into the mole ratio below.
Fe: Fe₂O₃= 2: 1
This means that for every mole of Fe₂O₃, twice the amount of Fe (in moles) is needed.
Thus for 10 moles of Fe₂O₃,
amount of Fe needed
= 10 ×2
= 20 moles
Answer:
Hi
Sodium Hydroxide is a strong base, it dissolves easily in water producing a large amount of calories and completely dissolving in its ions, to give hydroxide ions, as seen in the reaction:
NaOH(ac) ⇒ Na+(ac) + OH-(ac)
In the presence of ambient humidity, sodium hydroxide reacts with carbon dioxide to generate sodium carbonate. The gradual hydration generates six different hydrates: NaOH.H2O, NaOH.2H2O, NaOH.3.5H2O, NaOH.4H2O, NaOH.5H2O, NaOH.7H2O. Its great affinity for water causes a reduction in water vapor pressure and for that reason it is a very good drying agent.
Explanation:
Answer:
46.41%
Explanation:
Find the total r.m.m of AL(CLO3)3 put it equals to 100%.....The take 106.5,the total r.m.m of Cl and find the missing which is the percentage by cross multiplication
<h2>
Answer:Temperature</h2>
Explanation:
Average kinetic energy of a system of particles is given by 
.
where,
is the number of degrees of freedom of the particles.
is the boltzmann constant.
is the temperature.
For general gases,
For a given degrees of freedom,average kinetic energy is directly proportional to temperature.
So,the average kinetic energy depends on temperature.
