If Dave ran 40,000 yards how many meters did he run? Dimensional Analysis

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

Why is carbon ideal for making different compounds?

Stage in which a typical star has completely stopped fusion