Question

How many moles are there in 1.09 kg of Al(OH)3?

Answer 1

it most likely would be 78

Answer 2

For the calculation of moles, we divide mass of the substance given by the molar mass of the substance.

Its mathematically representation is as follows:

`Number of moles of a substance= (Given mass of a substance)/( Molar mass of substance)`

Here given mass of substance is 1.09 kg that is 1090 g

Molar mass of the substance is 78 g/mol

So number of moles can be calculated as:

`Number of moles of a substance= (Given mass of a substance)/( Molar mass of substance)`

`Number of moles of Al(OH)₃= (1090)/(78)`

So number of moles of Al(OH)₃ =13.9 mol