Agas sample at stp contains 1.15 g oxygen gas and 1.55 g nitrogen gas. what is the volume of the gas sample?

Explanation:

The given data is as follows.

        Mass of = 1.15 g

        Mass of = 1.55 g

Therefore, moles of oxygen present will be as follows.

             No. of moles of =

                              =

                              = 0.035 mol

             No. of moles of =

                              =

                              = 0.055 mol

Hence, total no. of moles = moles of + moles of

                              = (0.035 + 0.055) mol

                              = 0.09 mol

Now, it is known that at STP volume is 22.4 L/mol. Hence, volume of the gas sample at STP for 0.09 moles will be as follows.

                      = 2.01 L

Thus, we can conclude that volume of the given gas sample is 2.01 L.

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.

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