What can be used to identify an unknown substance? Density, Mass, volume?

You can Multiply

Explanation:

If you have a number of mass then you can divide density and volume or if you have all them I am pretty sure you can multiply

i think 4.44 moles

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.