Answer:
In glucose there are 6 carbon atom, atomic weight carbon is 12, so the molar mass is 72 and the percentage composition of carbon in C6H12O6=(72180)×100%=40% percentage by the mass.
When salt dissolves in water, the water molecules are attracted by dissolves salt particles. This attraction is called dissociation.
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Answer:
866000
Explanation:
because one kilometer (km) = 1000000 millimeters (mm)