A Cube of steel has dimensions 0.2m x 0.2 m x 0.2 m what is the volume of the cube in cubic centimeters

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never

Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g.  what is the percent by mass of water in the hydrate?   %