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)
Nitrogen (N) is monotonic but nitrogen gas (N2) is molecular.
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 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.