which is a pure substance?\no soda\no gasoline\no salt water\no carbon dioxide
which is a pure substance?\no soda\no gasoline\no salt water\no carbon dioxide
Answer
Brief Explanations:
A pure substance has a fixed - composition. Soda is a mixture of water, carbon dioxide, and various flavorings and sweeteners. Gasoline is a mixture of hydrocarbons. Salt water is a mixture of salt (sodium chloride) and water. Carbon dioxide is a compound with a definite chemical formula ($CO_2$) and fixed composition, making it a pure substance.
Answer:
carbon dioxide