Question

560g of silicon dioxide to molecules of silicon dioxide. SiO2?

Answer 1

Given :

560 gram of silicon dioxide.

To Find :

Number of moles of silicon dioxide in 560 gram.

Solution :

We know, molecular mass silicon dioxide is 60 gram/mol.

So, number of moles of silicon dioxide in 560 gram is :

$n = \dfrac{560\ g}{60\ g/mol}\\\\n = 9.33\ mol$

Now, one mole of any compound contain $6.022\times 10^{23}\ molecules$.

So, number of molecules in 9.33 moles of silicon dioxide is :

$M = 9.33\times 6.022\times 10^{23}\\\\M = 5.62\times 10^{24}\ molecules$

Hence, this is the required solution.