Tia learns that the temperature of rock in Earth's mantle varies depending on its location. Rock located close to the lithosphere is about 1,000 °C, and rock located close to the outer core is about
3,700 °C.
Tia uses the formula shown below to calculate the amount of heat that needs to be added to a 5-9
piece of rock in order to raise its temperature from 1,000 °C to 3,700 °C. She uses 0.79 J/g °C for
the specific heat of the rock

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.

first one is the correct answer

0.88m hope i am correct : )