What number should be placed in front of LiCi to balance this chemical equation?
2Li + MgCl2 → __LICI + Mg
A. 2
B. 4.
C. 1
D. 3

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull