Question

Which of the following statements about 0.5mole of oxygen gas is correct?[Relative atomic mass of Ne=20 and O=16;Avogadro constant=6.02x10^23mol^-1]
A It has a mass of 64g
B It has the same number of atoms as 40g of neon gas
C It contains 6.02x10^23 atoms of oxygen
D It has 6.02x10^23 molecules of oxygen
@Somy

Answer 1

which ones would you eliminate?

Answer 2

A

Answer 3

okay
then which one do you think fits?

Answer 4

oh i get

Answer 5

it is C

Answer 6

\[0.5\times2\times6.02\times10^{23}\]

Answer 7

\[=6.02\times10^{23}\]

Answer 8

Thanks @Somy :)

Answer 9

:)