From this value, and assuming that air contains only molecular nitrogen and molecular oxygen gases, calculate the mass percent of N2 and of O2 in air.

60% and 52%

Explanation:

At Standard temperature and volume (STP)

Volume of gas = 22.4L

Density = mass/volume

⇒ 1.186 =

= 26.566g

Molar mass of O2 = 16g/mole

Molar mass of N2 = 14g/mol

% mass of O2 = 16/26.566 × 100

= 60.23 %

% mass of N2 = 14/26.566 × 100

= 52.70 %

(Check: totl composition of gas is 100% i.e 60 + 52 %)

the answer is: they rebelled against saddam hussein’s rule.

kurds opposed saddam rule and wanted independence. kurds in the north and shiites in the south revolt against hussein.

for example, the halabja attack in 1988 conducted against the kurdish people by the iraqi regime under saddam hussein, where between 4000 people are killed and around 9000 are injured.

a electronegativity decreases beacuse the size of nucleus is bigger.