Answer: If a reaction produces a gas such as oxygen or carbon dioxide, there are two ways to measure the reaction rate: using a gas syringe to measure the gas produced, or calculating the reduction in the mass of the reaction solution.
Explanation:
https://courses.lumenlearning.com/introchem/chapter/measuring-reaction-rates/#:~:text=If%20a%20reaction%20produces%20a,mass%20of%20the%20reaction%20solution.
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Explanation:
The history of contact process was used until a need for concentrated acid arose, particularly for the manufacture of synthetic organic dyes.
Sand is denser than water while sawdust is not. The sand will sink and the sawdust will float.