An oxide XO\(_2\) has a vapour density of 32. What is the atomic mass of X?

a

32

b

20

c

14

d

12

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Correct Option
a

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Discussions (13)

Abdulliadi
7 years ago

vapour density =32
2*vd=rmm
rmm=32*2
=64

[XO2]n =64
X+32=64X=64-32
X=32

Ehromosele
3 years ago

Relative molecular mass=2 ×vapour density =2×32»64
XO2= X+2(16)
64=X+32
X=32(collecting like terms)

Anela
1 year ago

my bad 😔 all I was saying is
we're simply finding the MASS NO.
they used the word atomic mass to

it's not 16×2 to give 64 but 32×2 to give 64

chubi1
2 months ago

I actually thought relative molecular mass is the same as atomic mas

kokovibes
3 months ago

like we're did you guys got the 16 from

Anela
1 year ago

Mehnnn
the simple fact is they we ought the MASS NO., the whole atomic mass English was just for confuse

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