How many moles of potassium would you need to prepare 1200 grams of 5.0% potassium sulfate (m/m) solution
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Ответ:
calculation
calculate the mass potassium using the below formula
%M/M = mass of the solute(potassium)/mass of the solvent (potassium sulfate solution)
let the mass of potassium be represented by Y
then convert % into fraction = 5/100
5/100 = Y/1200
cross multiplication
100y = 6000
divide both side by 100
Y= 60 g
moles of potassium =mass/molar mass
= 60/39=1.538
Ответ:
The smallest unit that makes up matter is atoms.
Atoms are the smallest units in life. Atoms are so small that you can't even see them. Even a small thing thing is made up of thousands of atoms.
Your answer is C. atoms