PLEASE HURRY IM TIMED Which of the following are examples of physical changes? (Select all that apply.) tearing a piece of paper
a nail rusting
crushing a soda can

An aqueous solution of hydroiodic acid is standardized by titration with a 0.186 m solution of calcium hydroxide. if 26.5 ml of base are required to neutralize 20.3 ml of the acid, what is the molarity of the hydroiodic acid solution? m hydroiodic acid

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n