naddiachoudry9970
30.01.2021 •
Chemistry
Jewelry gold is usually mixed with other medals such as silver or platinum. It varies from 10K (10/24 gold) to 18K (18/24 gold). Is jewelry an element, compound or mixture?
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Ответ:
Jewelry is a Mixture
The following information should be considered:
Jewelry is a Mixture due to the variation in it's composition. Elements are pure substances.The jewelry gold is mixed with other medals so it is not an element. The Compound are substances that are bonded together with a fixed composition. So it is not a compound.Learn more: link
Ответ:
Mixture
Explanation:
Jewelry is a Mixture. This is because of the variation in it's composition.
Elements
Elements are pure substances. The fact that jewelry gold is mixed with other medals means it is no longer a single entity, hence not an element.
Compound
Compound are substances that are bonded together with a fixed composition. This means the jewelry gold is not a compound
Ответ:
A. The rate of the reverse reaction increases with an increase in the concentration of CaCO3(s)
Explanation:
If the concentration of a reactant has increased, The substance will shift in the direction of the reaction that uses the reactants, So that the Reactants substance Increases.