What does the letter r symbolize in a structural formula, such as rcooh?

Using the periodic table, complete the table to describe each atom. type in your answers

Write a balanced equation showing the formation of copper (ii) nitrite from its elements

Substance 33°f 100°f peanut oil solid liquid margarine solid liquid chocolate chips solid liquid which conclusion fits the data in the table? a. heat chemically changes chocolate and margarine. b. all solids become liquid at 100°f. c. removing heat from a substance it to melt. d. matter may change shape when it is heated.