Michelle carries out the test on zinc and lead. Justin carries out the test on copper and aluminium, Michelle uses dilute hydrochloric acid and Justin uses very dilute
sulfuric acid for his tests.
Michelle's investigation
0.5M
НСІ
very dilute acid
bubbles
very dilute acid
bubbles
lead
zinc
Justin's investigation
dilute acid
dilute acid
0.1M
H2S04
bubbles
aluminium
copper
3 Explain why Michelle and Justin cannot use their observations to decide if
copper or aluminium are more or less reactive than zinc and lead.​

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."

the link still does not work even when adding it to the url bar

explanation: