The slope of the line represents a quantity called density. If rise represents the y-axis and run represents the x-axis, what is the formula for density?

Density equals Mass over Volume

Explanation:

D=m/v

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.

they are made of gases.

they have a spherical shape.

they make energy through fusion.