What does a particular point on a line of a phase diagram represent?

The lines on the phase diagram represent combinations of pressures and temperatures at which two phases coexist in equilibrium. The green line dividing the solid and liquid phases represents melting solid to liquid and freezing liquid to solid

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By: BananaPeelBugaboo

n+h→nh3

we must remember that nitrogen and hydrogen are both diatomic molecules in their standard gas form. this adjusts the equation to

n2+h2→nh3

now we need to adjust coefficients in order to balance the atoms on each side of the equation. currently we have 2 atoms of nitrogen and 2 atoms of hydrogen on the reactant side and 1 atom of nitrogen and 3 atoms of hydrogen on the product side.

we can balance the hydrogens by placing a coefficient of 2 in front of ammonia and a coefficient of 3 in front of the hydrogen.

n2+3h2→2nh3

this gives us 6 hydrogen on each side and coincidentally the nitrogens now equal 2 on each side.

well in order to answer this question you have to provide more information < 3