What is being developed by chemist to supplement fossil fuels

Consider the reaction: n2(g) + o2(g) ? 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

What conclusion can you draw from this experiment about the components of the black ink?