Give reason
why Iron is not found in a free state?

What is the number of moles in 15.0 g ash3?

What is the equilibrium constant of aa+bb=cc+dd

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