What mass of propane is necessary to react with the amount of oxygen in the chemical formula c3h8 + 5o2 → 3co2 + 4h2o

How many moles of gas are present if p=11 atm, v=12l, t=185k?

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2

Molecular iodine, i2(g), dissociates into iodine atoms at 625 k with a first-order rate constant of 0.271 s−1. part a part complete what is the half-life for this reaction?