1. look at the chemical equation below. there is a number in the chemical equation
that is not a subscript. what do you think the number 2 on the right side of the
chemical equation represents?

The subscript on the left side indicating the number of atoms of hydrogen and chloride are taking part in the reaction.

While, on the right side the 2 is indicting the formation of two HCI molecules formed after the balancing of the chemical reaction.

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

phaneritic textures in which phaner means visible so phaneritic textures are standard of impertinent volcanic rocks. these rocks crystallized gradually under the surface of earth. when the magma cools deliberately then the ores have chance to develop and produce long crystals.