All electromagnetic waves travel at the same speed, it is known as the speed of light. This number is roughly 300 million meters per second in vacuum, somewhat less in mat â¦ erial substances. 1 person found this useful.
What is potassium chloride? Potassium is a mineral that is found in many foods and is needed for several functions of your body, especially the beating of your heart. Potassium chloride is used to prevent or to treat low blood levels of potassium (hypokalemia). Potassium levels can be low as a result of a disease or from taking certain medicines, or after a prolonged illness with diarrhea or vomiting. Potassium chloride may also be used for other purposes not listed in this medication guide.
Potassium (K) in Blood. A potassium test checks how much potassium is in the blood. Potassium is both an electrolyte and a mineral. It helps keep the water (the amount of fluid inside and outside the body's cells) and electrolyte balance of the body. Potassium is also important in how nerves and muscles work.