2. A Snickers bar is burned in a bomb calorimeter containing 3500 grams of water causing a 72°C temperature change. How many joules are there in a bar?

the correct answer is a

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.

how important do you think an instrument is to the musician who plays it?