___Al + ___O2 → ___Al2O3
4Al + 3O2 → 2Al2O3
Answer: 3.01 x 10^24 atoms
Explanation:
Based on Avogadro's law:
1 mole of any substance has 6.02 x 10^23 atoms
So, 1 mole of SI = 6.02 x 10^23 atoms
5.0 moles = Z atoms
To get the value of Z, cross multiply:
(Z atoms x 1 mole) = (6.02 x 10^23 atoms x 5.0 moles)
Z atoms•1 mole = 30.1 x 10^23 atoms•moles
Divide both sides by 1 mole
Z atoms•1 mole / 1 mole = 30.1 x 10^23 atoms•moles / 1 mole
Z = 30.1 x 10^23 atoms
[Place Z in standard form
So, Z = 3.01 x 10^24 atoms]
Thus, there are 3.01 x 10^24 atoms in 5.0 moles in SI
Hello Mlbozer,
Hope your having a great day! Gasses are known for having molecules that 'run' in a way. They all are Spread Out, and bounce off each other. Its a big mess, and is more 'spread out' than even liquid, in fact its the most open form of the three! So your answer is false!
Thank you,
Darian D.
Pb(NO3)2(aq)+2 NaBr (aq) PbBr2(s)+2 NaNO3(aq)
The molar mass of Pb(NO3) is 85 grams