Question is chemistry:

which of the following has higher lattice energy?

a. h2o (liquid water)
b. h2s (hydrogen sulfide gas)

H2S hydrogen sulfide gas has a higher lattice energy because

Formula: H2S

Molar mass: 34.1 g/mol

Boiling point: -76°F (-60°C)

Melting point: -115.6°F (-82°C)

Density: 1.36 kg/m³

Soluble in: Water, Alcohol

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.

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.