Answer:
Anything that shares electrons.
Explanation: This means they don't transfer electrons.
Answer:
2As2S3 + 9O2 = 2As2O3 + 6SO2
Explanation:
Density = mass / volume
Density = (78g) / (23cm^3)
Density = 3.4g/cm^3
Answer: 42.14 g
Explanation: calcium nitrate - 
, the molar mass of calcium nitrate = 164 g
<h3> formula used =

= no of moles </h3>
mass required =
=
g
D. Two electrons in its first energy level; eight electrons in its second energy level; six valence electrons in its outermost energy level.
Please correct me if I'm wrong!! :)