Question

CALCULATE THE RELATIVE MOLECULAR WEIGHT OF ALUMINIUM CARBONATE PLEASE ANSWER AS FAST AS POSSIBLE......

Answer 1

Answer:

rmm of al2(Co3)3 = 54+36+144

=234amu

Answer 2

$\underline \mathrm\red{How \: to \: find \: a \: relative \: molecular \: mass \: - }$

To find a relative molecular mass or relative molecular weight or relative formula mass , we should add the atomic masses of all the elements in it.

$\underline \mathrm \red{To \: find -}$

Relative molecular mass of Al2(CO)3.

$\underline \mathrm \red{solution \: - }$

There are two elements in the above compound that is aluminium , carbon and oxygen.

so,

Since there are two atoms of aluminium, 3 atoms of carbon and three atoms of oxygen present in the molecule so we will multiply the number of atoms with their atomic mass and then we will add further....

Atomic mass of Aluminium = 27.0

Atomic mass of carbon = 12.0

Atomic mass of oxygen = 16

therefore,

Relative atomic mass = 27*2 + 12*3 + 16*3

= 54 + 36 + 48

= 138 a.m.u. ans.