Carbon is burned with dry air. The volumetric analysis of the products is 10.06%, CO2, 0.42% CO, 10.69% O2 and 78.83% N2.
1- The stoichiometric and actual air-fuel ratio;

2- The percentage of the theoretical air used.​

Asample of silver (with work function ? = 4.52 ev) is exposed to an ultraviolet light source (? = 200 nm), which results in the ejection of photoelectrons. what changes will be observed if: silver is replaced with copper (? = 5.10 ev) more photoelectrons ejected no photoelectrons are emitted fewer photoelectrons ejected more energetic photoelectrons (on average) less energetic photoelectrons (on average)

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

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?