Pls answer 10cm3 of a gaseous hydrocarbon, cxhy, were mixed with 70cm3 of oxygen ( in excess) and exploded, after cooling to room temperature, the residual gas3soccupoed 50cm3. by absorption with koh solution, the volume of the residual gases decreased to 20cm3. all gaseous volume were measured under indentical conditions. determine the molecular formula of hydrocarbon?

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.

it should be all of them because it asks if you included all of those in your answer

explanation: