A science teacher wants to demonstrate a chemical change to her students. She fills a beaker with water and boils it on a hot plate. Eventually the volume of the water in the beaker decreases to small amount.
Part A
What change(s) should the teacher make to the demonstration to correct her error?

the law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products

i believe it is 40–40–20%

explanation:

"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."