Consider a two-stroke spark ignition cycle with a compression ratio of 8.8. If the cycle max temperature is 2519°C and the temperature at the beginning of the compression phase is 70°C, what must the mass of the air-fuel mixture be for a total heat flux by combustion (Qin) of 1934 J? Use the air-standard property values for engine operating cycles endorsed by Willard Pulrabek and give your answer in grams. Use three significant figures.