1. Hyperbaric oxygen chambers are used to treat divers suffering from decompress

Question

1. Hyperbaric oxygen chambers are used to treat divers suffering from decompression sickness (the “bends”) with pure oxygen at greater than atmospheric pressure. What is the pressure (atm) in a hyperbaric chamber with a volume of 2.36 x 10^3 L that contains 4635 g of oxygen gas (molecular oxygen) at a temperature of 25.5 oC?

2. Sodium (elemental) reacts with potassium nitrate to produce potassium oxide, sodium oxide and nitrogen gas (molecular nitrogen). What volume (L) of nitrogen gas will be produced from 0.500 kg of potassium nitrate at 27.0 oC and 1.05 atm if the percent yield for the reaction is 80.0%?

Explanation / Answer

1)

Molar mass of O2 = 32 g/mol


mass(O2)= 4635 g

use:
number of mol of O2,
n = mass of O2/molar mass of O2
=(4635.0 g)/(32 g/mol)
= 1.448*10^2 mol

Given:
V = 2360.0 L
n = 144.8438 mol
T = 25.5 oC
= (25.5+273) K
= 298.5 K

use:
P * V = n*R*T
P * 2360 L = 144.8438 mol* 0.08206 atm.L/mol.K * 298.5 K
P = 1.5034 atm
Answer: 1.50 atm

Only 1 question at a time please

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.