In a chemical equation, a subscript tells one how many atoms or molecules of a reactant or a product take part in a reaction.
In thermal cracking, high temperatures (typically in the range of 450°C to 750°C) and pressures (up to about 70 atmospheres) are used to break the large hydrocarbons into smaller ones. Thermal cracking gives mixtures of products containing high proportions of hydrocarbons with double bonds - alkenes.
Answer:A colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance.
Explanation:
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