Question

Question #ee169

Answer 1

You have done well except molar mass of hydrogen gas `"H"_2`, should be doubled as it has two atoms. The answer goes as below

Explanation:

Use the formula
Density `d = "Molar mass"xx P / (RT)`

`"Molar mass" = 2xx1.00794= 2.01588g`
`P = 1645 xx 0.068046 = 111.93567 atm`
`R = 0.08206`
`T = 273.15 + 24.0 = 297.15 K`

Inserting the values in the formula:

`d = 2.01588xx 111.93567 / (0.08206xx297.15)`

`d = 9.2 g//L`, rounded to one decimal place.