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A TITRATION is a laboratory method used to determine the concentration of an acid or a food in a solution.
earth method
The Dumas method is used to determine nitrogen concentration in compounds.
sounding technique
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Parallax is a method used to find the distances of stars.
PCR technology can be used to this field.
Density
they put it in water???
carbon dating
The Bradford method involves a chemical test. It is used by scientists to determine the concentration of proteins in a solution.
The displacement method is used to determine volume. However, if you know the density, the displacement test can give volume, which is used to work out mass by the formula m = dV