Question #34103

1 Answer
Dec 17, 2017

See below.

Explanation:

First, convert °C into Kelvin ---> #28.20°C = 301.2K#

Use PV = nRT, plug in the given values and find n, or the number of moles of Krypton.

Since we are using atm for pressure, the R constant is 0.0821

(#11.2#atm)(#18.5L#) = #n(0.0821)(301.2K)# ---> #n = 8.379# moles of Krypton

Now you convert moles to grams:
(#8.379# moles Kr) # * # (#83.798# grams Kr #/ 1 # mole Kr) ---> #~702# grams of Krypton**