10 is mixture of elements and compounds
11 is compound
12-15 are mixture of compounds
Calculating speed or atoms and molecules or planets!
Hope i helped plz mark as brainlist!
V1 / T1 = V2 / T2
3.5 / 20 = 3 / T2
T2 = 17.1 C
% by mass = (mass solute/mass solution)*100%
mass of the solute = 54.7 g
mass of the solution = mass solute + mass solvent=54.7+500=554.7 g
% by mass = (54.7/554.7)*100%≈0.0986*100% = 9.86%
