Sodium and potassium are essential electrolytes that maintain water distribution in the body but are lost through sweat during exercise. Gatorade contains 160 milligrams of sodium and 45 milligrams of potassium per serving, while Powerade contains 150 milligrams of sodium and 35 milligrams of potassium per serving.
The number of chromosomes that a butterfly has varies widely. The  wood white butterfly can have anywhere from 56 to 106 chromosomes.  Some butterflies have as many as 380.
This nucleus contains the DNA, the hereditary material. But this DNA does not float around randomly through the nucleus, it is neatly packed into something we call chromosomes (see the figure below). We people have 46 chromosomes, fruit flies have 8 and the flour beetle I work on has 20.