Electric current is passed through a copper ball 1 mm in diameter. The ball is submerged in liquid water at atmospheric pressure, and the current is increased until the water boils. For this situation h=5000W/m2 oC. How much electric power must be supplied to the wire to maintain the ball at 114oC?

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

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

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )