2.. What are the missing coefficients for the following equation? H2O*
H₂ +
1 point
02
4, 2, 4
2,1,2
1, 1, 2
2,2,1

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture