Question

La masa de una olla es de 300g y contiene 90% de aluminio. Hallar el número de moles de aluminio de la olla. P.A.(Al= 27)

Answer 1

Step-by-step explanation:

The mass of a pot is 300g and contains 90% aluminum. Find the number of moles of aluminum in the pot. P.A. (Al = 27)

The mass of aluminum present in the pot is:

`300 g * 90/100\\=270 g`

Hence, in the given pot 270g Al is present.

`Number of moles of Al=(given mass ofAl)/(its molar mass)`

The gram atomic mass of Al -27 g/mol

Given the mass of Al is 270 g

Substitute these values in the above formula:

`Number of moles of Al=(given mass ofAl)/(its molar mass)\\=(270 g)/(27 g) \\=10.0 mol`

Answer is 10.0 mol of Al is present.