1 Calcium chloride is a compound made of calcium and chloride, and is one of the types of salt used to control ice on sidewalks and roadways. 2  The compound is often produced from limestone. 3  Potassium nitrate-This electrolyte, commonly known by the formula KNO3, is used in a wide variety of substances.
A. work hard like a mule in a field B. stubborn like a mule C. not as smart as a mule D. policy choices stunk like a mule. A: The original meaning of the Democratic donkey symbol was: stubborn like a mule.
Cartoonist Thomas Nast (1840-1902) used the elephant and donkey to represent the Republican and Democratic Parties respectively in his political cartoons. One reason he became so influential was that many people who were illiterate were nevertheless able to understand the message in Nast's cartoons.