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.
Later, cartoonist Thomas Nast used the Democratic donkey in newspaper cartoons and made the symbol famous. Nast invented another famous symbolâthe Republican elephant. In a cartoon that appeared in Harper's Weekly in 1874, Nast drew a donkey clothed in lion's skin, scaring away all the animals at the zoo.