Why do people make mixtures

How do you know when a chemical reaction has taken place?

Calculate the mass/volume percent (m/v) of 13.0 g nacl in 49.5 ml of solution.

Use the periodic table to determine the electron configuration for Cl and Y in noble-gas notation. Cl:

How many molecules of NaCl are there in 250 grams of table salt

Why do Hurricanes not form directly on the equator?

Which of Newtons law's is sometimes expressed as "for every action there is equal and opposite reaction"

Provide a general comparison of the empty space in a solid with that in a liquid as well as

Which of the following are chemicals? A. clothing B. food C. fuels D. all of the above

How many valence electrons are in atom of sulfur?

My sister needs this answered! Donald is creating an experiment to determine if fertilizer affects plant color. He makes this statement: "If each plant receives a different amount of fertilizer, then the plant's color intensity will change.