He can repeat his experiment multiple times, and ask a friend to repeat it as well to see if they get the same answer.
Fluorine has 9 protons and 9 electrons
Iodine has 53 protons and 53 electrons
When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises.
Answer
Na OH reacts with H Cl and forms Na Cl and H₂O
NaOH + HCl → NaCl + H₂O
Here we can see that 1 mole of NaOH reacting with 1 mole of HCl and forming 1 mole of NaCl and 1 mole of H₂O
when NaOH and HCl are added together in equal amount then they will completely neutralize each other but NaOH is hygroscopic in nature which means it can absorb water from air so it will not be weighted accurately.
hence, for neutralization we will take extra NaOH.
Magnets have batteries and the batteries make the magnets work it depends on which way the batteries are facing or if not im sorry and i hope this helped
