I think you just multiply the numbers (3.8 Times 1024)
And you get 3,891.2
Answer:
2.1 M is the molarity of the HCl solution.
Explanation:
Molarity of HCl solution =
Volume of HCl solution =
Ionizable hydrogen ions in HCl =
Molarity of NaOH solution =
Volume of NaOH solution =
Ionizable hydroxide ions in NaOH =
(neutralization )
2.1 M is the molarity of the HCl solution.
The formula unit of compound made up from Pb4+ and oxygen is PbO2.
Some physical properties change, but the substance keeps its identity.
When dealing with these kind of questions, understand that the keyword here is physical change. Thus, all options that says no physical properties change are WRONG. So this leaves us with only 2 answers left. However, this is a physical change, no chemical change. Thus, the substance will keep its identity and not change.