150ml of alcohol has a mass of 120g. What is the density of this alcohol?

Density =mass / volume

Density = 120/150

density=4/5= 0.8kg/l

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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