Question

Determine the mass of 30.5 moles of diatomic oxygen (O2)

Answer 1

Molar mass O₂ = 16 x 2 = 32.0 g/mol

1 mol O₂--------------------------- 32.0 g
30.5 moles O₂-------------------- ? ( mass O₂)

mass O₂ = ( 30.5 ) x 32.0 / 1

mass O₂ = 976.0 / 1

= 976.0 grams of O₂

hope this helps!

Answer 2

976g of
`O_(2)`

Step-by-step explanation:

First you should find the molar mass of the
`O_(2)`:

Molar mass of
`O_(2)` = 2 * molar mass of O

Molar mass of
`O_(2)` = 2 * 16
`(g)/(mol)`

Molar mass of
`O_(2)` = 32
`(g)/(mol)`

Then you should use the conversion factor:

`30.5molesO_(2)*(32gO_(2))/(1molO_(2))=976gO_(2)`

That is in 30.5 moles of
`O_(2)` there are 976g of
`O_(2)`