Select all that apply. In two molecules of carbon dioxide (2CO2), there are .

two atoms of oxygen
two atoms of carbon
four atoms of carbon
four atoms of oxygen

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 an example of a physical property?

Which statement best explains the relationship between an area is geography and the temperature of its surface water