When 72.8 g C3H8 reacts with 225 g O2, and 175 g of CO2 are isolated, what is the percent yield of CO2? 94.3
80.1
18.9
54.5

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.