Which would have a greater density, 5 g of aluminum or 5 kg of aluminum if they were both the same temperature? fully explain your answer.

the 5g would be more dense due to the mass and structure

Of it causing the atoms to expand as heat gets added

Explanation:

indium, and thallium have three electrons i think

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.