The chart lists four different kinds of atoms.

what is true about all of these atoms?
calcium
gold
argon
lodine

they cannot be solids.
they are the largest units of matter.
they are the only types of atoms that exist.
they cannot be divided.

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters