Question

If 64 grams of O2 is at a volume of 17L, how many moles will it occupy at 12 L.

___moles

Answer 1

Step-by-step explanation:

17L - 64grams

12L - x grams (where x = mass at 12L)

X =
`(12*64)/(17)`

x =
`(768)/(17)`

x = 45.2g

moles,n = mass,m/ molar mass

molar mass of O2 = 16*2 = 32

moles, n =
`(45.2)/(32)`

moles, n = 1.4125 mol

Therefore O2 occupys 1.4125moles at 12L