a) What is the approximate relative atomic mass of this element?
b) Identify X.
2007-10-20 09:36:13 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
12gx12g=144g
That would make x: Neodymium with an atomic mass of slightly over 144.
2007-10-20 10:17:47 · answer #1 · answered by Pat 2 · 0⤊ 0⤋
Mass= 144
Go to periodic table and find an element with atomic number around 144 (probably a rare earth element).
2007-10-20 09:47:20 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋
a)..12 x 12 = 144 is the Atomic Mass
...of b).. of Neodymium (Nd).
2007-10-20 10:47:44 · answer #3 · answered by Norrie 7 · 0⤊ 0⤋
12x12=144
Whatever element's weight is 144.
2007-10-20 09:40:02 · answer #4 · answered by Cat Loves Her Sabres 6 · 1⤊ 1⤋
study man you won't get anywhere trusting other peoples answers
2007-10-20 09:44:14 · answer #5 · answered by Anonymous · 0⤊ 0⤋