Question

pls tell the solution with proper method

Answer 1

Answer:

2x gram

Explanation:

X gram can also be written as 1x gram

amount of oxygen diffuses in 15seconds=1x gram

amount of helium diffuses in 30seconds=?

let amount of helium may be X

1x gram = 15seconds

X gram= 30seconds

1x gram ×30 seconds/X gram×15 seconds

30seconds/X gram ×15 seconds

X =30/15

X =2

therefore the amount of helium diffuses in 30seconds=2x gram

Answer 2

Answer:

Explanation:

$\frac{r1}{r2} = \sqrt \frac{M2}{M1}$

$\frac{\frac{x}{15}}{\frac{V}{30}} = \sqrt \frac{4}{32}$

$V = 4\sqrt{2} x$