Problem #1
% V / V (percentage of volume per volume) =?
V1 (solute volume) = 25 mL
V (volume of the solution) = solute + solvent = 25 mL + 45 mL = 70 mL
We apply the data to the formula of volume percentage of the solute per volume of solution, we will have:
%v/v=v1/v*100
%v/v=25/70*100
%v/v=2500/70
%v/v≈35,71 ←(percentage concentration)
problem #2
The picture down there↓
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Hope it helps
#keep on learning ^w^
brainliest me pls
