It's to do with the intermolecular bonds (the van Der Waals forces). If they are strong, the substance exists as a solid as the particles are held together with a strong force. If however they are weak, the substance will be a gas.
This equation is:NH4NO2 = N2 + 2 H2O
NH4NO2(s) --Δ--> 2 H2O(l) + N2(g)
Nitrogen (N) is monotonic but nitrogen gas (N2) is molecular.
Nitrogen forms molecules N2, whereas phosphorus forms larger molecules such as P4.(Phosphorus has a number of allotropes). The underlying reason is that nitrogen a second period element can form double bonds to itself much better than P which is in period 3.
The standard enthalpy of formation for N2 gas is 0 kJ/mol.
yup. nitrogen gas-- N2
N2 is not solid at room temperature. This is one of the diatomic elements that are in the gaseous state at room temperature.
At room temperature N (N2) is a gas. N, by itself, does not exist at room temperature and standard pressure. It exists as the diatomic gas, N2.
This equation is:NH4NO2 = N2 + 2 H2O
Nitrogen can be obtained as a solid at very low temperature, under -210 0C. At room temperature nitrogen is a gas.
NH4NO2(s) --Δ--> 2 H2O(l) + N2(g)
It is an element. Since any temperature is "natural", the physical state is meaningless. It can be anything from a Bose-Einstein condensate (unlocalizeable), a solid, a liquid, a gas, or a plasma... and be "natural" for that temperature. At standard temperure and pressure, it is a very stable diatomic gas (N2). Nitrogen's natural stage is N2 gas. It is diatomic and can only exist with 2 nitrogen molecules, so it must be N2 not N.
Nitrogen (N) is monotonic but nitrogen gas (N2) is molecular.
Nitrogen forms molecules N2, whereas phosphorus forms larger molecules such as P4.(Phosphorus has a number of allotropes). The underlying reason is that nitrogen a second period element can form double bonds to itself much better than P which is in period 3.
The balanced equation for the reaction is: 3Ca + N2 -> Ca3N2 The reaction occurs at high temperatures, typically above 300°C.
no
The standard enthalpy of formation for N2 gas is 0 kJ/mol.