The two factors that determine whether a reaction is spontaneous or nonspontaneous are

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

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

What is the mass of 0.46 mil of mgcl2