PLS HELP "NO LINKS" Given that the mass density of air at 0.987 bar and 27°C is 1.146 kg·m−3, calculate the mole fraction and partial pressure of nitrogen and oxygen assuming the following conditions.
(a) air consists only of these two gases
mole fraction nitrogen:

mole fraction oxygen:

partial pressure nitrogen:

partial pressure oxygen:

(b) air also contains 1.0-mole percent Ar
mole fraction nitrogen:

mole fraction oxygen:

partial pressure nitrogen:

partial pressure oxygen:

partial pressure argon:

All answers need to be in sig fig 4
Thanks!

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

c. electrical charges of ionic bonds.