1. at stp, how many liters of oxygen are required to react completely with 3.6 liters of hydrogen to form water? 2h2(g)+o2(g) -> 2h2o(g) a. 1.8 l b. 3.6 l c. 2.0 l d. 2.4 l 2. which conversion factor do you use first to calculate the number of grams of co2 produced by the reaction of 50.6 g of ch4 with o2? the equation for the complete combustion of methane is: ch4(g) +2o2(g) -> co2 + 2h2o(l) a. 1 mol ch4/ 16.0g ch4 b. 2 mol o2/1 mol co2 c. 16.0g ch4/1 mol co4 d. 44.0g co2/2 mol co2 3. which of the following statements is true about the following reaction? 3nahco3(aq) + c6h8)7(aq) -> 3co2(g) + 3h2o(s) + na3c6h5o7(aq) a. 22.4 l of co2(g) are produced for every liter of c6h8o7(aq) reacted. b. 1 mole of water is produced for every mole of carbon dioxide produced. c. 6.02 x 10^23 molecules of na3c6h5o7(aq) are produced for every mole of nahco3(aq) used. d. 54 g of water are produced for every mole of nahc)3(aq) produced.

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.

thats how its supposed to be