How is a compound different from a mixture?

a. it is made of one substance
b. it can not be made of organic materials
c. it cannot be broken down.
d. it can not be seperated by a physical change.

In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction. express your answer as a chemical equation. identify all of the phases in your answer.

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Determine the total number of atoms in 1.0 mol of co2