Using the following balanced question:
1b2o3 + 3mg —-> 3mgo + 2b
a) how many grams of b can be obtained from 234 grams of b2o3?
b) how many grams of magnesium are required to produce 40.0 grams of boron?

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

What is the number of atoms in 3.54 mol s

Which is a characteristic of the electron sea model for metallic bonding? molecular orbitals overlap to produce bands. electrons flow easily between metal nuclei. electrons are in fixed positions in the orbitals. atomic nuclei are arranged in an irregular pattern.