Answer:
See the answer below
Explanation:
<em>Recall that the law of dilution states that the number of moles before dilution must be equal to the number of moles after dilution.</em>
Mathematically,
molarity x number of moles before dilution = molarity x number of moles after dilution.
For solution A: final molarity = 3 mM, final volume = 2mL, initial molarity of KMnO4 = 10 mM
Applying the equation:
10 x initial volume = 3 x 2
initial volume = 6/10 = 0.6
<u>Hence, Tube A should be made with 0.6 mL of 10 mM KMnO4 stock and 1.4 mL of distilled water to give a solution of 2 mL 3 mM KMnO4.</u>
For solution B:final molarity = 8 mM, final volume = 2 mL, initial molarity = 10 mM
10 x initial volume = 8 x 2
initial volume = 16/10 = 1.6
<u>Hence, Tube B should be made with 1.6 mL of 10 mM KMnO4 stock and 0.4 mL of distilled water to give a solution of 2 mL 8mM KMnO4. </u>
Second thoughts:
I don't think doing anything in the future will be of use, because we should have already done it, and we didn't, so we have to do it now.
And what we should do is:
To find and actually use and apply new energy sources.
To do more (or less, depending on what the problem is).
To clean the mess we have done / recover the gap in the ozone layer /fix the damage that we have caused.
If you're interested:
I don't think protesting (like we're currently doing) will be of help for two simple reasons:
1. - I don't know for sure, but I don't think politicians care, like or pay attention to protests (unless it's something like the Yellow Jackets).
2. - The time we spend protesting is more valuable than we think. We should leave that aside.
Hope it helped,
BiologiaMagister
Answer:
Evaporation, Convection, Precipitation, and Collection are the main ones.
Explanation:
hope this helps
have a good day
<span>1. Two-year old Zack has an inherited disorder in which his body cannot break down fat. He will probably die by the time he is four. Zack is most likely suffering from:
a. phenylketonuria.
</span><span>
2.
The first two weeks of a pregnancy, from conception to implantation, are known as the _____ period.
Select one:
b. germinal
3. Which of the following is TRUE of transcranial magnetic stimulation (TMS)?
a. It uses an electrical current.
4. Drive-reduction approaches to motivation are:
Select one:
c. theories suggesting that motivation stems from the desire to obtain valued external goals.
</span>
