The one created by mandeleev is not in order of increasing the atomic number
These readings suggest the balance is: precise accurate neither accurate nor precise accurate and precise
<span> 2 moles of N2O5 = 4 moles of NO2
2.4 mol N2O5/1 X 4 mol NO2/2 mol N2O5 (this way you can cross out the N2O5 mol and just be left with NO2 mol)
2.4 X 4 = 9.6
9.6/2 = 4.8
4.8 mol NO2 are formed</span>
Answer:
1.126 x 10^22
Explanation:
pV = nRT
7.53 x 10 = n x 8.31 x 485
n = (7.53 x 10) / (8.31 x 485) = 0.0187 moles
M = n x Avogadros number
0.0187 x 6.02 x 10^23 = 1.126 x 10^22