Plutonium-238 undergoes alpha decay as shown: 238 9 Pu → 2X+ He Enter the appropriate values for A and Z and the chemical symbol for X. X:​

Seltzer water is created by placing water under pressure with carbon dioxide gas. which of the following statements best describe seltzer water: a. the solution will be slightly acidic b. the solution will be slightly basic. the solution will be strongly acidic. d. the solution will be strongly basic. e. the solution will be neutral

What produces wave a)sound b) heats c)transfer of energy d)vibrations

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these