Question

three atoms of element Z is 4 times heavier than two carbon atoms.... what is the relative atomic mass of element Z ? [ AR; C=12]

Answer 1

If one C has a mass of 12amu, then 2 of them should weigh how much? Four groups of 2 C atoms will weigh how much also? That mass will be the same as 3 of atom Z, so divide the mass of 8 C atoms by three.

Answer 2

erk
don't uderstand..
can specific it~
show the way/method?

Answer 3

1 C atom weighs 12 amu. 8 of them should weigh 8 times 12amu\[8 C atoms * (\frac{12amu}{1C atom})\]