Chemistry
Which of the following methods is used in determining the number average molar mass of a macromolecule

Light scattering
Viscosity
Osmotic pressure
Sedimentation equilibrium

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Chemistry
The main use of salt in the diet is to

increase the solubility of food particles in water
ease the process of cooking
produce in small amounts the hydrochloric acid required for the digestion of food
make the taste of food better

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