The air is 78.0% nitrogen and 22.0% oxygen (by number of moles).
Pressure = 1.030 atm
Temp = 21.8 deg. C
Volume = 1.020 L
R = 0.0821 L*atm/mol*K
N = 14.01 g/mol
O = 16.00 g/mol
How many moles of gas are there in the flask?
How many moles of nitrogen gas are there?
How many moles of oxygen gas are there?
What is the overall density of the air?
What is the mass of air in the flask?
please explain
2006-11-10 06:31:01 · 1 answers · asked by smile 1 in Science & Mathematics ➔ Chemistry
how do you find the density? are you sure the density and the mass of the flask the same
2006-11-10 10:35:04 · update #1
n = pV/RT = 1.03*1.02/284*0.0821 = 0.045moles
moles of Nitrogen = 0.045*0.78=0.0351
moles of oxygen = 0.022*0.045 = 0.0098mole
weight of the gases = 0.0098*32 + 0.0351*28.02 =0.316+ 0.986=1.3g
density 1.3 g/l
2006-11-10 06:46:22 · answer #1 · answered by maussy 7 · 0⤊ 0⤋