The law of multiple proportions states that substances combine in predictable portions when excess reactants are used, the excess becomes leftovers when two elements combine, a and b, the ratio of the weight of b combining with a is always a whole number none of the above

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

2b2t

explanation:

2b2t

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.