In an experiment, 2.0 g of solid sodium bicarbonate ( NaHCO3) waz tested for solubility. At 20°C and stirring, NaHCO3 took 60 minutes to dissolve. At 20°C and no stirring, NaHCO3 took
90 minutes to dissolve. Why is stirring a factor in the dissolving of the NaHCO3?

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.

the answer is na (sodium)