Question

What is the mass of 9.30 moles of SiH4 ?

Answer 1

The molar mass of SiH4 (Silicon Hydrogen) is approximately 32.117 grams per mole, SIH4 has a mass of 298.69 grams of course.

Answer 2

298.716 g of
`SiH_(4)`

Step-by-step explanation:

`SiH_(4)` is a molecule with one atom of Si and four atoms of H.

First you should calculate the molar mass of each atom:

Molar mass of Si = 28.0855

Molar mass of H = 1.00784

So, the molar mass of the
`SiH_(4)` will be:

Molar mass of
`SiH_(4)` = 28.0855 + (1.00784 x 4)

Molar mass of
`SiH_(4)` =
`32.12(g)/(mol)`

it means that one mol of
`SiH_(4)` has a molar mass of
`32.12(g)/(mol)`.

Now you can calulate the mass:

`9.30molesSiH_(4)*(32.12gSiH_(4))/(1molSiH_(4))` = 298.716 g of
`SiH_(4)`