How many moles of carbon dioxide are produced when 10.4 mol of propane gas is burned in excess oxygen? The equation for the combustion of propane is C3H8+5O2=3CO2+4H2O

Iknow #2 is d. i just need to know why

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.

Precision can be defined as the o exact center of a data set. o reproducibility of a measured value. o correlation between two variables that are measured in a data set agreement between a measured value and an accepted value.