What coefficients would you use to balance this equation? Mn3N7 + Ba - → Ba 3N2 +
Mn +7
A
2, 21, 7, 6
B
2, 14, 7, 14
D
2, 6, 2, 3
1, 3, 7,3

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Summarize possible ways in which phases of matter could combine to form a solution.

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures