5
mL acetic acid
95
mL water
Explanation:
Since
5
%
of the vinegar, by volume, is acetic acid, and we have
100
mL of vinegar, we have
5
mL of vinegar.
Similarly, we have
100
%
−
5
%
=
95
%
being water, so we have
95
mL of water.
Answer:
Inhibitor
Explanation:
Inhibitors generally slow down a reaction rate and prevent the particles from reacting with each other.
It's not the others because:
Catalysts work by lowering the activation energy, which in turn increases the reaction rate as more particles have enough energy to react.
Surface area allows for particles in the reaction to collide more often with each other, which increases the reaction rate.
Temperature increases the speed of particles in the reaction, causing particles to collide more often with each other and therefore increasing the reaction rate.
Students who spend less time studying after school, get lower math grades. Option D.
<h3>What is a research investigation?</h3>
In science, a research investigation is an organized inquiry made into phenomena in order to logically understand them. The investigation follows an established procedure, otherwise known as the scientific method.
The original investigation by the student has to do with factors that affect math grades. Conclusions are usually drawn from the aim and objectives of the research. Thus, the conclusion must relate to the aim of the research in a logical way.
The only option that fits in logically going by the aim of the investigation is that students who spend less time studying after school, get lower math grades.
More on research investigations can be found here: brainly.com/question/4118656
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Answer:
0.0890 M
Explanation:
Since the concentration of KCl is irrelevant in this case, the concentration of Na2S2O3 can be determined using a simple dilution equation:
C1V1 = C2V2, where C1 = 0.149 M, V1 = 150 mL, V2 = 250 mL
C2 = 0.149 x 150/250
= 0.089 M
To determine the concentration of S2O32- (aq), consider the equation:
The concentration of Na2S2O3 and S2O32- (aq) is 1:1
Hence, the concentration in molarity of S2O32- (aq) is 0.089 M.
To 3 significant figures = 0.0890 M
<span>A. Mechanic agitations</span>
