What is the empirical formula of a 212.1g sample of a compound that contains 42.4g H and 169.7g C? What is the molecular formula of the compound having a molecular mass of 30.0g?

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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?

Which terms are used to identify pure substances