The variables which can affect the speed of a chemical reaction are inihibitor, concentration, temperature and particle size.
Speed of any reaction also known as rate of reaction and it gives idea about the duration that at how much time it will complete.
Hence all of the above will changes the speed of the reaction.
To know more about speed of reaction, visit the below link:
Your answer is B(I'm not very much sure about this one), C, and D.
I hope very much that I am correct, hope this helps you.
~Onyx~
She mixes two solutions and measures their pH before and after.
She asks her lab partner which base he thinks is hardest to study. <-- my answer
She measures the temperature of a solution before and after adding H2SO4.
Answer: Option (c) is the correct answer.
Explanation:
An experiment conducted by following a detailed and organized series of steps in such a manner that its result will reject or validate the hypothesis.
For example, using an acid-base indicator will help to measure the pH of a solution.
A scientific reaction is performed in controlled conditions with proper precautions unless it could be dangerous to perform the experiment.
Therefore, we can conclude that she asks her lab partner which base he thinks is hardest to study is not a scientific experiment.
Answer:
The correct answer is by adding surface roughness to increase friction.
Explanation: