Which equation represents a double replacement reaction

Litmus paper is made from water-soluble dyes which are extracted from lichens. this paper is used as an acid-base indicator. which of these common household substances would turn blue litmus paper red? a) bleach b) lye c) soap d) vinegar

Using the periodic table, complete the table to describe each atom. type in your answers. a ? b? c? d? e? f?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )