Because mixtures are special types of substances that cannot be changed. The formulas are something that make something up.
Toothpaste is a mixture, not a compound and so there cannot be a chemical formula.
Toothpaste is a mixture, not a compound and so there cannot be a chemical formula.
Petrol is a mixture of various hydrocarbons, so its correct formula cannot be isolated
Bitumen (asphalt) (tar) is a mixture of chemicals left over at the end of a distillation process. As it is not a pure substance (a single chemical), we cannot provide you with a chemical formula.
Because in a mixture, there are no bonds formed between the elements, and therefore the proportions of each element are unknown, for the mixture as a whole. A mixture is not a chemical change.
Endocytosis is a process by which cells absorb molecules (such as proteins) or large particles (such as bacteria) by engulfing them. It cannot be represented by a chemical formula.
Petroleum is a complex mixture of hydrocarbons, primarily composed of alkanes with varying carbon chain lengths. The structural formula of petroleum cannot be represented by a single formula due to its diverse composition. However, it can be generally represented as (CnH2n+2).
Its Formula cannot be obtained because it is a mixture
There is no formula for Pi, it cannot be represented by any formula. It is a fundamental constant.
Gasoline is a mixture of hydrocarbons, so its correct formula cannot be obtained
There is no chemical fomula for milk. Milk is a very complex mixture of chemicals. This mixture contains protein (most notably casein and whey protein), carbohydrates (sugar), vitamins, minerals, butterfat and water.
Feviquick is NOT a chemical compound (it is a mixture) so its chemical formula cannot be obtained.