Why is citric acid added to food?
1.to add color
2.to add tartness
3.to add bitterness
4.to add sweetness

Describe the forces both attractive and repulsive that occur as two atoms move closer together.

Which description best characterization the motion of particles in a solid

High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa) to about 60,000 kpa (60,000,000 pa). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 1.03×108 pa , what is its running pressure in torr?