How does altering the energy of the alpha particle effect the direction of the paths?

Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?

Which diagram represents the phase tha occurs after a solid melts?

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid