Each of the Nitrogen atoms has 2 non bonded valence electrons, meaning that there are 4 pairs total.
Answer:
7.71x10^23 molecules
Explanation:
Avogadro's # = 6.022x10^23
1.28 mol SiO2 x 6.022x10^23/ 1 mol SiO2 = 7.71x10^23 molecules
Answer: 4) Concentrate it
Explanation:
