You have two identical balloons, a dowel, and a piece of string. How can you use those things to show that a gas has and volume

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³