Answer:
it's 4 or fish and I think
A control sample serves as a sample used to eliminate errors or minimize them. Also, it is used to prevent the effect of one parameter which is not the subject being studied. For instance, in an adsorption experiment a control sample is always included wherein in a flask it only contains the adsorbate solution. The said sample is responsible for calculating how much of the adsorbate is being adsorbed on the sides of the flask.
Answer:
<h2>0.52 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula
From the question
volume = final volume of water - initial volume of water
volume = 35 - 8 = 27 mL
We have
We have the final answer as
<h3>0.52 g/mL</h3>
Hope this helps you
Molarity of methanol is 0.223 M.
<u>Explanation:</u>
We need to find the molarity of methanol by using the given mass and volume in litres by finding its moles using the given mass and molar mass and then using the moles and volume, we can find the molarity of the solution.
Molarity =
Moles =
=
= 0.78 moles
Now, we can find the molarity as,
= 0.223 M
So the concentration of methanol solution is 0.223 M.