How many molecules would there be in 0.500 grams of carbon disulfide CS2?

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

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 natural processes produce large quantities of co2