Question

How many molecules are present in 3.09 mol of silicon dioxide, SiO2

Answer 1

There are 1.86 x 10²⁴ molecules of Silicon dioxide, SiO₂

Further explanation

The mole is the number of particles(molecules, atoms, ions) contained in a substance

Moles can also be determined from the amount of substance mass and its molar mass

1 mol = 6.02.10²³  particles

Can be formulated

$\tt \boxed{\bold{N=n\times No}}$

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

• Given

3.09 mol of Silicon dioxide, SiO₂

n=mol=3.09

• Number of molecules :

$\tt N=n\times No\\\\N=3.09\times 6.02\times 10^{23}\\\\N=\boxed{\bold{1.86\times 10^{24}~molecules}}}$